Wheels

Sta-Tru Double Wall Front Wheels. - Hub/Brake Compatibility: Rim Brake - Wheel Size: 700c - ISO Diameter: 622 / road / 29" - Front Axle: QR x 100mm - Valve: Schrader - Tire Type: Clincher

When mounting a wheel quickly and safely, the RWS system is untouchable. It combines the fast mounting of a conventional quick release with the force and safety of a fitting. The high-precision toothing at the inside of the lever allows you to fully tighten the axle and perfectly position the lever. - Ratcheting system tightens skewers with turns rather than a cam - Lever can be rotated into an ideal position after tightening - Removable, plug-in lever design is streamlined and protects your RWS lever

When mounting a wheel quickly and safely, the RWS system is untouchable. It combines the fast mounting of a conventional quick release with the force and safety of a fitting. The high-precision toothing at the inside of the lever allows you to fully tighten the axle and perfectly position the lever. - Ratcheting system tightens skewers with turns rather than a cam - Lever can be rotated into an ideal position after tightening - For E-thru axle frames - Length: 171mm - Thread Pitch: 12 x 1.5mm

The reliable rim with an ideal price-to-performance ratio! The jack-of-all-trades of road rims: light, wide, and with an ideal price-to-performance ratio. The R 470 works perfectly with wide tires and will deliver many unforgettable rides on the road thanks to its reliability.

Aluminum rear hub for bicycle - 18P DBCL 24 holes, straightpull, black. Aluminum Campagnolo freehub body, black. - Dimension: 12x142mm

Strong and lightweight welded AM rim in 30mm inner width for modern tires. Riders who like the idea of giving their tires some extra volume and support will find the ideal partner with the XM 481. Its full 30mm of inner width combined with a minimal hook and perfect tubeless compatibility, make it ready to tackle all demanding trails, both up and down the mountain.

This is one of the most versatile spokes in the DT Swiss spoke range. DT competition gets its special strength from cold forging. This makes an extremely durable spoke and thanks to the thinner middle section, it is 48 g lighter (per 64 spokes) than a spoke with a constant diameter of 1.8 mm. It is perfect for a wide range of uses, from road wheels to super light enduro MTB wheels. - Double Butted: 2.0/1.8/2.0 - One 264mm spoke = 6g - Nipples sold separately

Direct power transmission in every riding situation—240 with Ratchet EXP. With the latest generation of the 240 hubs, the strengths have been further enhanced. The latest Ratchet EXP freehub system increases the bearing lifetime thanks to the increased bearing distance. The new version of the end caps simplifies tool-free disassembly and makes maintenance easier. The hollow-machined ratchets transfer your energy directly into acceleration thanks to the 36 teeth.

The buyer's choice for wheel builders looking to save weight. ProLock nipples contain a special adhesive compound (by Loctite) which is activated when a spoke is threaded into the nipple, forming a durable bond. - 32 nipples weigh approximately 30 grams

Sleeved 25mm Enduro rim, ready for the rough. Let your muscles play on the uphills and switch to attack mode for the downhills. This is exactly what DT Swiss Enduro rims are made for. Each rim is a piece of high precision engineering and, thanks to the extremely resistant alloy, the E 512 can cope with the most demanding trails.

The number to count on—240 with Ratchet EXP. The new 240 is developed for riders with the most extreme ambitions. The latest version of the hub is equipped with the Ratchet EXP system to maximize reliability. The increased bearing distance increases bearing lifetime, the straight spring provides more direct engagement (which reduces wear), and a smaller number of parts not only makes maintenance easier, but also reduces weight.

After a long climb, the perfect trail lies ahead of your tires: flowy, dusty, varied, endless. Nothing holds you back from entering the All-Mountain thrills with the M 1900 Spline wheels. A rim developed with optimal balance of durability and weight offers efficient climbing characteristics as well as dent resistance on single trails. With experienced wheel building by hand, this wheel is a reliable partner to collect freewheeling moments in the mountains. - Intended use = XC and All-Mountain/Trail - Tubeless ready, 30mm wide and light rim - Straight-pull hubs/spokes built with a 3-cross pattern - Includes Tubeless Valve and Tape, 6-bolt adapter with lockring

When mounting a wheel quickly and safely, the RWS system is untouchable. It combines the fast mounting of a conventional quick release with the force and safety of a fitting. The high-precision toothing at the inside of the lever allows you to fully tighten the axle and perfectly position the lever. - Ratcheting system tightens skewers with turns rather than a cam - Lever can be rotated into an ideal position after tightening

The reliable rim with an ideal price-to-performance ratio! A state-of-the-art, high-quality aluminum rim, making for the perfect upgrade on any road bike. That is what the new RR 421 rim is all about. The welded rim supports wider tires and still offers a super-lightweight wheel build-up.

You like gravel and wide tires? This is your rim. The GR 531 is made for off-road adventures. This aluminum gravel rim with an inner width of 24mm is designed for wide, knobby tires up to 53mm. Torsion-resistant and robust, the welded rim supports a wide range of gravel use.

Our lightest alloy rim with welded, advanced rim profile! The most advanced alloy existing for rims meets the most advanced rim profile to form the RR 411 rim. From the moment the alloy is melted, all the way to the secret surface treatment, this rim is all about getting the absolute best out of the great, shiny metal that is aluminum. Very light, very strong, and very classy is the result.

No words needed. Just google "EX 471 Leogang World Cup". Let your muscles play on the uphills and switch to attack mode for the downhills. This is exactly what the DT Swiss Enduro rims are made for. Each rim is a piece of high precision engineering and, thanks to the extremely resistant alloy, the EX 471 can cope with the most demanding trails.

Introducing the Gravel racing GRC 1400. With a holistic approach of engineering DT re-thought the characteristics of a modern benchmark setting gravel wheel set. Aerodynamic efficiency, ideal support of wide gravel tires leading to comfort and traction off-road as well as remarkable durability are only some of the key features that make this wheel set the perfect companion for your next gravel adventure. - 42mm aero-optimized rim depth for 35mm wide gravel tires

DT Pro Head nipples are designed for short spokes with a large angle of deflexion such as for e-bike use. Through the spherical contact surface, the nipple aligns automatically with the angle of the spoke, which leads to a homogeneous power transmission. The special shape of the head prevents the nipple of tilting in the rim base, which is a great advantage for wheel building. They are available with or without the patented DT Pro Lock locking system. Note: brass nipples are not approved for children’s products in the USA.

The number to count on—240 with Ratchet EXP. The new 240 is developed for riders with the most extreme ambitions. The latest version of the hub is equipped with the Ratchet EXP system to maximize reliability. The increased bearing distance increases bearing lifetime, the straight spring provides more direct engagement (which reduces wear), and a smaller number of parts not only makes maintenance easier, but also reduces weight.

Your entire focus lies on the right line choice, the exact braking point and the spot-on steering movement. All the everyday stress fades away, you feel free and only hear the precise sound of the freehub system. The E 1900 Spline wheels were developed precisely for these freewheeling moments. A proven aluminum rim and hand-laced steel spokes provide the reliability required from an Enduro wheel. - Intended use = All-Mountain/Trail, Enduro and Freeride - Tubeless ready, 30mm wide and light rim - Straight-pull hubs/spokes built with a 3-cross pattern - Includes Tubeless Valve and Tape

DT Swiss tubeless ready tape seals the rim for tubeless applications and also works well as rim tape for tube-type set ups. - Highly resistant adhesive tape works as a rim tape and airseal

This sleeved, 25mm-wide, light, and strong rim is as versatile as AM riding itself. Derived from our extremely successful Enduro rims, which have won at the world's highest level under the world's fastest racers, the M 462 packs that world-class technology into a slightly slimmed package for All Mountain use while staying affordable thanks to the sleeved rim joint.

Featuring the new generation Ratchet System hubs that are lighter and faster than ever before, along with bladed spokes and the superb wheel build quality and reliability you expect from DT Swiss, the XRC 1200 SPLINE 25 is a race-bred trail machine that loves to go fast. It accelerates like nothing else, tracks like nothing else, and is reliable like nothing else. It is the benchmark for high speeds on any trail, on any gravel road, and in any race — whether that race takes place between the tape or in your head. - SRAM XD MTB cassette-compatible

As versatile as it is robust—a rim for all surfaces! Anyone wanting to build a reliable, super-stiff wheel is starting in the right place with the RR 511. Thanks to a state-of-the-art alloy and surface treatment, this extremely robust 32mm high semi-aero rim is lighter than you would think. And, those thinking of using it on Gravel or Cyclocross courses can easily install tubeless tires.

Are you already planning your next bikepacking trip? The GR 1600 wheels are made for gravel adventures and all those unique experiences one can find far away from the tarmac and the rest of the road cycling community. A super durable aluminum wheel made of reliable components that supports you for endless miles of troublefree riding pleasure. Ready to explore the world? With the GR 1600 you definitely are. - 350 based hub

The pinnacle among the hubs–Ratchet EXP united with SINC ceramic bearings. The premium 180 hub convinces with its sophisticated Ratchet EXP technology, giving the hub extra lightness, stiffness, and precision along with easy, no-tool maintenance. Furthermore, assembled with the low-friction SINC ceramic bearings, the hub performs efficiently and brings your power directly to the road. The hub is available for straight pull spokes only.

DT Swiss tubeless ready tape seals the rim for tubeless applications and also works well as rim tape for tube-type set ups. - Highly resistant adhesive tape works as a rim tape and airseal

Dependable Independence – Reliability, versatility, and simplicity are united in a hub. The 350 hub is a dependable road mate for every adventure, whether on asphalt or gravel roads. A lightweight axle in combination with a milled hub body ensures a low weight while the proven Ratchet System with 36 teeth guarantees reliable power transmission. The plug-in construction allows maintenance of the freehub system without special tools and conversion to different standards - for maximum versatility. PRODUCT DETAILS: - A DEPENDABLE HUB The freehub Ratchet System makes the 350 the dependable partner for any ride - NO TOOL CONCEPT Plug-in hub construction allows for quick and tool-free maintenance - NEW ENDCAPS The new shape of the end caps facilitates disassembly and thus speeds up handling requiring disassembly - VARIETY The 350 hub is available for all common axle standards and for the various drivetrain systems. TECHNOLOGY: We believe in the art of engineering and strive for sophistication in the product development process. Our guiding idea is to constantly push barriers with our in-house developed technologies. LEGENDARY RELIABILITY: The patented freewheel system, which features high-precision star ratchets, guarantees top performance and reliability. The simultaneous engagement of the ratchet teeth makes the Ratchet System extremely reliable since the loads are distributed equally across a large contact surface.

Fastest XC Wheels In the Real World 1240 grams is an obscenely light weight when talking about mountain bike wheelsets, the kind of weight that XC racers dream about. But light weight alone is no longer enough. So, we engineered the new Control SL wheels to be sharp handling, smooth riding, extra durable, and 22% less likely to pinch-flat your tires, in addition to being some of the lightest weight production wheels on the planet. - Bearing Type: SiNC Ceramic Sealed cartridge - System Weight Limit: 275lbs / 125kg - Total Wheelset Weight: 1240g

Our 2Bliss Ready Rim Strips create a secure barrier from sealant to rim in a clean simple to install strip. Riders running 2Bliss can now change tires quicker and easier than with any other tubeless system.

- Black Ops DW1.1 wheelsets for popular modern day BMX and wheelie bikes - Black Ops MX1100 hubs with sealed bearings and laced with DT spokes - 24mm inner rim width supports a variety of modern sizes - OLD: Front: 100mm, Rear: 110mm - Gears: Singlespeed freewheel - Type: Tube only - Size: 24-inch

- Low-profile 30mm internal width optimizes tire shape, traction, and control for 2.3-2.6'' tires - Durable 6069 aluminum with welded joint and reinforced spoke bed - BST Asymmetric design combines Stan's legendary easy tubeless inflation with a stronger, more balanced wheel build - Reinforced spoke bed, combined with the offset drilling of the asymmetrical design, builds into an incredibly durable wheel that brings added confidence to every ride. Specs: - Rim Material: Aluminum - Rim Eyelets: No - Valve: Presta - Rim Construction: Double wall - Brake Type: Disc - Tire Type: Tubeless Ready

- STW ST1 26.5mm wide alloy rims - KT QR ATB 9mm/100/108 axle - Black or Silver UCP spokes

Developed for short spokes with a large deflection angle. DT Pro Head nipples are designed for short spokes with a large angle of deflection, such as for e-bike use. Through the spherical contact surface, the nipple aligns automatically with the angle of the spoke, which leads to consistent power transmission. Note: brass nipples are not approved for children's products in the USA. See attached warning! All-brass nipples are recommended for e-bike use. - Weight: starting at 59g for 64 nipples.

The Wolf Tooth Rear Axle uses a captive steel washer under the head to reduce friction on the dropout face. This protects your expensive frame, transfers more of the tightening torque to clamping load for a stiffer interface and prevents the axle from sticking or galling when you want to remove it. - Made in Minnesota to aerospace standards

This is one of the most versatile spokes in the DT Swiss spoke range. DT competition gets its special strength from cold forging. This makes an extremely durable spoke and thanks to the thinner middle section, it is 48 g lighter (per 64 spokes) than a spoke with a constant diameter of 1.8 mm. It is perfect for a wide range of uses, from road wheels to super light enduro MTB wheels. - Double Butted: 2.0/1.8/2.0 - Compatible with straight pull hubs only - One 264mm spoke = 5.9g - Nipples sold separately

Rear axle conversion kits convert your hub to fit a new axle measurement or for a new group set. All DT Swiss hubs can be converted.

Front axle conversion kits convert your hub to fit a new axle measurement or for a new group set.

A rock-steady classic for road riding. - 18mm inner width - Professional tubeless tape installation included

- MAX bearings are filled completely with high precision Grade 10 balls for maximum load capacity - No retainer means these bearings have 40 percent more capacity

Tannus Armour Tubeless inserts are the result of years of top level multi-cell foam manufacturing mixed with extensive professional riding experience. At the heart of Tannus is the patented Aither Technology; a multi-cell foam compound that forms the structure of the Armour. The inserts are designed to displace small impacts while offering a spring-like rebound for a smooth yet playful ride. - 3% Faster than standard tubeless - Flexible sidewall stabilizing "Wings" for smoother ride quality, with 50% more vibration damping - 20mm of rim protection - Not a sealant sponge – keeps sealant where it belongs - Easy Installation (5 Minutes, No tools required) - 150g - About as much as a standard tube (a little lighter)

Industry Nine Hydra Classic hubs are the heart of your wheelset, everything revolves around them, literally. Every Classic Hydra hub is made start to finish in Asheville, NC. From turning and milling bar stock 7075-T6 aluminum for shells, axles and encaps, wire EDM cutting A2 tool steel for pawls and driverings, to in-house anodization lab, every step of design, engineering, manufacturing and assembly is done to exacting standards. - 690 P.O.E. Hydra Freehub body engages every .52 degrees yeilding telepathic control - 6 pawl, 6 phase - 115 tooth drivering - Easily serviced with no proprietary tools. Designed to keep you in the saddle and out of the service queue - Classic j-bend spoke interface - Steel cartridge bearings are durable

After years of mountain biking with thru-axles with bulky handles that seemed to strike every trailside obstacle, we needed a better option. Our Lightning Bolt-On thru axles offer a high-quality, simple, lightweight alternative to that bulky handle. Available in a range of sizes that fit both front and rear wheels on all types of thru-axle-equipped bikes. - Lightning is Better—Our front and rear Lightning Bolt-On axles offer a stronger, more durable, lower profile, and lighter weight option to replace your stock thru-axles. - Low Profile—No more bulky handles to strike trail obstacles or create wind drag. Aerodynamic design. - Light Weight—Our axles are internally bored to remove unnecessary material without compromising strength. - Easy to install—Our matching front and rear Lightning Bolt-On Axles require only a standard 6mm hex wrench for easy installation and removal. - Better Tolerances—Manufactured in the USA to the tightest tolerances using aerospace materials and CNC manufacturing. No longer will your axle loosen while riding. - The axle is precision CNC-machined in the USA from 7075 aluminum and hard-anodized for rugged durability. Our axles are built to the tightest standards in the industry. - No special tools required. Design allows for wheel installation and removal using your standard 6mm hex wrench. - Designed, built, and quality tested in the USA. Proven around the world.

Disc brakes have arrived in road cycling. They’re proven in mountain and cyclocross, and with the new EC90 SL Disc wheels combined with the latest brake systems, there are no longer any compromises associated with going disc. The EC90 SL takes the proven Fantom rim shape and scales it down to a shallower 38-millimeter depth. The EC90 SL Disc is available in tubular or certified Road Tubeless carbon clincher and are entirely built by hand from start to finish and acoustically tuned. These wheels combine top-end materials, a methodical build and the proven M1 6-bolt disc hubset. Best of all, these wheels are future proof, they can convert to 15x100 & 12x100; parts sold separately.

WTB's TCS AL valves are aluminum to shed grams, and come in catchy anodized red, black, or blue. A stepped lock nut adds compatibility among various rim drillings, a smooth pump interface makes adding air easy, and a removable core makes setting beads and injecting sealant a cinch. - Presta - 34mm

SRAM's Rise 60 conversion caps are the ticket for converting your Rise 60 wheels to a different axle type.

The 350 road hub delivers the amazing performance you've come to expect from DT Swiss at an incredible value. Fast and reliable, these hubs will roll for thousands of nearly frictionless miles. Plus, DT's legendary Ratchet System ensures precise engagement no matter how hard you stomp on the pedals.

WTB's proprietary 4D spoke drilling prevents binding and lateral loading of the spokes, while the spoke bed itself has been updated to provide a more compatible interface between the spoke and rim. Integration of the all-new Solid Strip on our TCS 2.0 rims delivers the easiest to mount and most reliable tubeless system we've ever made. Features: - TCS 2.0 creates a more robust, easily installed and dependable tubeless system. - A recessed channel along the center of TCS 2.0 rims allows installation of the all-new Solid Strip, which prevents tubeless tape from sagging at the spoke holes and results in a smooth, consistent interface between the tire and rim. - 4D angled spoke drilling eliminates binding and lateral loading, and disperses tension more evenly over a greater area

- Designed, tested, and raced to victories on the World Cup DH and Enduro World Series circuits - Tie beam triple-cavity rim design resists damage and prevents air loss under impacts - 29mm internal width optimized for 2.35" to 2.8" Trail, All-mountain, and DH tires - E-sync hubs

- Black Ops DW1.1 wheelsets for popular modern day BMX and wheelie bikes - Black Ops MX1100 hubs with sealed bearings and laced with DT spokes - 24mm inner rim width supports a variety of modern sizes - OLD: Front: 100mm, Rear: 110mm - Gears: Singlespeed freewheel - Type: Tube only - Size: 29-inch

- Tubeless compatible US made aluminum disc-only rim with a 25mm wide aero profile - Specifically tuned to be aerodynamically paired with 23-28c road tires, though a 20mm inner width compliments even the most voluminous gravel and cyclocross tires - Tubeless ready using 24mm Velotape

Elite Series skewers for fat bike applications AL6061 alloy lever with CrMo axle Available for 135mm, 150mm, 170mm, and 190mm OLD spacing

- AL6061 alloy tubeless Presta valve - Includes 2 O-rings, one standard profile and one aero profile, for an airtight seal on any rim - Removable valve core for installing sealant - Additional replacement valve cores sold separately - Sold individually

- High-quality fat bike rim strips - Super durable PVC material

Make your WTB rims air tight and ready for tubeless use with WTB's TCS Rim Tape. This tape covers the spoke holes and can be used as a lightweight rim tape in any rim. Available in 11-meter (covers 5 rims) and 55-meter rolls (covers 27 rims).

After years of mountain biking with thru-axles with bulky handles that seemed to strike every trailside obstacle, we needed a better option. Our Lightning Bolt-On thru axles offer a high-quality, simple, lightweight alternative to that bulky handle. Available in a range of sizes that fit both front and rear wheels on all types of thru-axle-equipped bikes. - Lightning is Better—Our front and rear Lightning Bolt-On axles offer a stronger, more durable, lower profile, and lighter weight option to replace your stock thru-axles. - Low Profile—No more bulky handles to strike trail obstacles. Aerodynamic design. - Light Weight—Our axles are internally bored to remove unnecessary material without compromising strength. - Easy to install—Our matching front and rear Lightning Bolt-On Axles require only a standard 6mm hex wrench for easy installation and removal. - Better Tolerances—Manufactured in the USA to the tightest tolerances using aerospace materials and CNC manufacturing. No longer will your axle loosen while riding.

SMOOTHER IS FASTER Trail riders who prize nimble handling will be blown away by Traverse SL II's category-leading control, strength-to-weight ratio, and pinch-flat resistance. LIGHTER At 1,645 grams, this is our lightest trail wheelset ever. STRONGER Front and Rear Specific Rims with carbon layups optimized for strength and weight boast 15% greater front wheel strength and 25% more rear wheel strength than the previous Traverse SL. CONTROL-BOOSTING VERTICAL COMPLIANCE 21% more vertically compliant than the previous Traverse SL (delivered through Shallow Rim Shape and front/rear specific layup) enables enhanced terrain hugging and bump-force absorbing control. TRACTION MONSTER Carefully engineered rim shape intentionally flexes for improved support and traction to boost confidence and control. TOUGH LIFE, LONG LIFE Engineered rim offset enables balanced spoke tension for improved fatigue life. Lifetime warranty on Roval Wheels when registered within the first 90 days of purchase. SAYONARA PINCH FLATS Optimized "Flat Top" bead profile requires 85% more force to pinch flat compared to a standard round bead, virtually eliminating "snake bites." AIR TIME Thank our genius engineer Chuck Teixeira for inventing the "Roval ThreadBed Valve"; a valve that threads directly into the rim eliminating compression nuts, air loss from rim flex, and makes tire set-up easier, and reduces sealant clogs. INTENDED USE Trail WEIGHT (29) 1,645g 240 EXP (with valve and tape) WHEEL SIZES: 29 2 Year "It Happens" No Fault Crash Replacement - If you damage your Roval product while riding within the first two years of ownership and it's not covered under warranty, we'll still replace or repair. USA Only and wheels must be registered. STRUCTURAL WEIGHT LIMIT (Rider & Cargo) - 125kg / 275lbs

Feel your bike come alive on the open road with the new Alpinist CLX II-the lightest, best-handling clincher wheels we have ever made. Hyper-responsive acceleration, magic in the corners, sublime over rough roads, all elevated with the performance of a tubeless system. There's no room for a single excess gram whether you're chasing summits or ride quality because perfection is only achieved when there is nothing left to take away. It takes more than a lightweight rim to deliver the incredible reactivity and handling of the tubeless Alpinist CLX II. The wheelset is designed as a system with our engineers controlling and testing every part of that system-hubs, rims, spokes, lacing-and developing it hand-in-hand with Specialized Tubeless tires. The result is a 1250-gram tubeless wheelset with otherworldly ride quality. The Alpinist CLX II utilizes a hooked rim (allowing for real-world riding pressures up to 110psi, if that's your thing) for secure tire bead retention and an easier set up and mounting experience than ever before. All in a wheel that almost doubles current industry impact standards while managing to achieve the lightest weight possible. Our all-new LightAF hubs are the spinning heart of the Alpinist CLX II. We carved 50 grams out of the previous Alpinist CLX hub with new low-profile hub bodies and machined rotor mounts. Inside, DT Swiss EXP internals and SINC ceramic bearings deliver silky-smooth efficiency and outstanding durability. - Rim: Alpinist CLX Carbon Clincher, 700c, Disc Brake, Tubeless - Rim Details: 33mm Depth, 27mm External Width, 21mm Internal Width - Hub: Roval Light Hub (LFD13/LF14R) Center Lock, DT Swiss 180 Ratchet EXP 36t internals (10 degs), 100x12mm & 142x12mm, Shim. RD. 11SP HG freehub - Bearing Type: DT Swiss SINC Ceramic Bearings - Spokes: DT Swiss Aerolite T-head, Front: Radial/One-cross (2:1) 21 count, DS: 276mm, NDS: 290mm; Rear: One-cross/Two-cross (2:1), DS: 288mm NDS: 286mm - Nipple: DT Swiss Hex Prolock Al 2.0x14mm - Tire Size: 24mm - 38mm; Max Pressure: 24mm-35mm: Tubeless (110psi) Tubed (130psi), 36mm-38mm: Tubeless (60psi) Tubed (60psi) - Weight: Wheelset 1,265g, Front 670g, Rear 694g (including 15g, tubeless rim tape and tubeless valve) - Assembly Method: Hand built at every step; from rim layup to the last nipple turn. - Extras: Roval Rim Tape, Spare Spoke & Nipple Kit, System Weight Limit: 275lbs/125kg

- Road racing/training rim based on the Aerohead rim with a wider footprint that allows for a more aerodynamic rim/tire combination when paired with a 23c tire - Tire profile mimics the characteristics of a tubular - Hollow core aluminum with machined sidewalls for improved braking - O/C version: Off center design allows for dramatically improved spoke tension on a dished wheel, the A23 OC allows for a more aerodynamic rim/tire combination when paired with a 23c tire - US made A23 rims now feature a tubeless ready design. Combine that with the new 21mm wide Velotape kit and you have a fool-proof Road and Cyclocross tubeless tire setup