Parts

- Model Number: RD-R3000-GS - Series: SORA - Maximum Sprocket: 34T - Minimum Sprocket: 11T - Maximum Front Difference: 20T - Total Capacity: 43T

- Model Number: RD-R3000-SS - Series: SORA - Maximum Sprocket: 32T - Minimum Sprocket: 11T - Maximum Front Difference: 16T - Total Capacity: 37T

Shimano's Tiagra 10-speed Chain offers crisp shifting and excellent durability. Smooth, precise shifts come courtesy of the engineered inner and outer plates that are specifically designed to accommodate the unique requirements of a moving chain.

The Shimano Tiagra ST-4720 hydraulic shift/brake lever brings the all-conditions confidence and refined ergonomics of hydraulic disc brakes to the quick and intuitive shifting cyclists expect from Shimano Tiagra. - Smooth and effortless operation that offers quick and intuitive shifting operation - Greater reach adjust range allows for better rider comfort and control in all conditions - Redesigned internal shifting unit - Compatible with Shimano road 10-speed rear derailleurs

Shimano's Tiagra Front Derailleur (3x10-speed) is sleek, balanced and consistent. The Tiagra 4700 series provides serious entry-level riding performance with cascaded technology from the top shelf Dura Ace line. - Model Number: FD-4703 - Series: Tiagra - Cassette Compatibility: 10 - Top Gear Teeth: 50T - Maximum Capacity: 20T - Chain Stay Angle: 63-66 - Chain Line: 45 - Band Mount: 28.6mm / 31.8mm (w/AdapterS) 34.9mm

Shimano Tourney SL-RS45 shift lever delivers easy and reliable shifting for all riders. The Revoshift shifter allows riders to maintain a secure and stable grip on the handlebar by requiring just a twist of the thumb and index finger for shifting. - Twist shifter - Optical gear display - Includes SIS40 shift cable set - Stationary grips not included

The Shimano Tourney TX EZ FIRE Plus Shift/Brake levers feature Reach Adjust, SIS Index Shifting, and an Optical Gear Display. - Includes OT-SIS40 derailleur cable and housing set - The EZ FIRE Plus features two shift levers, just like the RAPIDFIRE Plus. The upshift lever is located at the top so it is easy to see - Optical Gear Display allows easy use for entry-level riders - Reach adjust mechanism allows for the lever to be adjusted for any hand size, type of riding, or individual preference - 2-Finger lever, compatible with linear-pull and mechanical disc brakes

Shimano's BB-UN55 Square Spindle Bottom Brackets are the unofficial standard for English-threaded cartridge bottom brackets. Quality, value, and durability come together to keep you cranking for many, many miles. - Fits JIS Square-Taper Cranksets - Hollow spindle - Crankarm fixing bolts not included

Shimano's Ultegra 10-Speed Cassette delivers pro-level shifting and durability. The computer-enhanced tooth shapes and tough cogs mean you can shift quickly, precisely and smoothly even under pressure.

Shimano Ultegra CN-6600 10-Speed Chain - Hyperglide 10-Speed chain - Ultegra 6600 and 105 5600 chains are recommended for use in conjunction with Ultegra 6703 and 105 5703 triple - Optimized chain for HG sprocket which provides a fast and precise rear shifting performance (especially during downshifts) - Chromized rivet pins improve wear resistance - Zinc-alloy plated outer link surface treatment - Chain Connection Type: Pressed Pin - Color: Silver/Gray - Defined Color: Silver - Drivetrain Speeds: 10 - Half Link Chain: No - Links (links): 116 - Weight: 280 grams - Width: 6.1mm

Shimano's Ultegra 10-speed Chain offers crisp shifting and excellent durability. Smooth, precise shifts come courtesy of the meticulously engineered inner and outer plate chamfers that are specifically designed to accommodate the unique requirements of a moving chain. And, the plates are perforated to trim precious grams. - Weight: 267g

Shimano Ultegra R8000 Shadow rear derailleur. - Sleek integrated appearance - Low-profile design - Race endurance - Optimized slant angle - Wide compatibility - Short cage covers: 11-25T to 11-30T - Medium cage covers: 11-28T to 11-34T - Model Number: RD-R8000 - Series: Ultegra - Maximum Sprocket: 30T - Minimum Sprocket: 11T - Maximum Front Difference: 16T - Average Weight: 200 grams (short cage type), 210 grams (medium cage type)

Shimano STI lever hoods. - Fits Ultegra ST-6700 levers only

The World's Most Technologically Advanced Saddle Pad. Lifetime Weatherproof Guarantee. - Great Waterproof Cover - Figure-8 Drawstring For A Secure Fit - Friction-Free Gel - Cover Material: Weatherproof - Length: 247mm - Width: 182mm - Weight: 196g

Serfas' BMX Saddle is the perfect choice for dirt-jumpers, park rippers, and street riders who need comfort plus durability. The nice padding and quality top provide sweet support and cushioning and the beefy 9mm-diameter chromoly rails hold up to hard landings. This great seat also sports front and rear grip areas for traction and scuff protection, too. • Rails: 9mm super strong rails • Front and rear grips areas for extra scuff protection • Size: 254mm x 165mm • Weight: 714 Grams • Cover: Ballistic Nylon

• Smooth Post • Standard Rim Compound • Applicable Hardware Included • Easy to Install • Durable, Long Lasting Compound

Slide in Serfas' BPS100 Shimano Compatible Road Pads for reliable braking. These cartridge style brake pads install easily and all hardware is included.

Serfas' BPS-300UL CNC V-Style MTB Brake Pads provide lightweight, reliable stopping power. Replaceable pads and included hardware making installing and maintaining these brakes simple. • Compatible with Shimano V-Brakes

Serfas' innovative BPS300 V-Brake MTB Brake Pads provide reliable stopping power. The dual stage pads clean and prevent squeaking. Plus, they're easy to install.

Serfas' durable BPV10 MTB V-Brake Compatible Pads provide reliable stopping power in all conditions. Plus, they self center for easy installation.

The Super Thin Dual Lock-On Grips feature Serfas' great dual-density design for excellent comfort. The hard inners offer a firm base and the soft outers provide a tacky and comfortable feel. And, with the lock-on clamps, they're easy to install and they won't slip no matter what. - Extremely thin profile - Shock absorbing gel top layer - Dual density design - Open-end style for easy installation - Length: 140mm

Add some carbon appeal to your bars with Serfas' Carbon Look Bar Tape. This light, faux-carbon wrap is easily installed thanks to the adhesive back and adds a touch of class to any bike. • Faux Carbon Design • Padded for Shock Absorbency • Adhesive Backing for Easy Installation • Washable

Connectors feature Serfas' great dual density design for excellent comfort. The hard inners offer a firm base and the soft outers provide a tacky and comfortable feel. And Connectors are easy to install and super secure, too. • 3 & 7 speed design • Dual density design • Open-end style for easy installation • Includes: 1 twist-shift compatible grip

Serfas' Cruiser RX combines Serfas' Dual-Density padding with shock-absorbing springs for a supple and gentle ride. Plus, the elevated seat position and anatomical groove down the center eliminate pressure so you can enjoy cruising around for miles and miles. What's more, the split design allows the two sides of the seat to flex independently to reduce friction and irritation. • Twin Bar Design • Rails: Steel • Size: 273mm x 216mm • Weight: 825 Grams • Cover: Silk-Tech Lycra

Sit back and relax in style with Serfas' Cruiser Reactive Gel Saddle. Its wide base and springs keep you feeling good no matter how long your rides are. You'll also love the grooved top that eliminates pressure to sensitive areas and the gel inside that conforms to your body for a custom fit. • Rear spring suspension • Deep Groove design • Progressive Foam design • Rails: Steel • Size: 267mm x 241mm • Weight: 850 Grams • Cover: Lycra

Serfas delivers superior comfort for those long days on the bike with their Dual Density saddle. The base absorbs shock while the top layer uses Silk-Tech Lycra to conform to your shape giving you frictionless comfort. The anatomic dip relieves pressure from sensitive areas, too. • Rails: Steel • Size: 279mm x 171mm • Weight: 565 Grams • Cover: Silk-Tech Lycra

Serfas delivers superior comfort for those long days on the bike with their Dual Density saddle. The base absorbs shock while the top layer uses gel to conform to your shape giving you frictionless comfort. The anatomic dip relieves pressure from sensitive areas, too. • Rails: Steel • Size: 254mm x 178mm • Weight: 575 Grams • Cover: Silk-Tech Lycra

With Serfas' high-tech base technology and Infinite Comfort System, the Women’s Dual Density feels as comfortable as your living-room recliner. The anatomic channel relieves pressure from sensitive areas and the gel padding and shock-absorbing rubber inserts smooth every ride. Plus, the side and nose bumpers protect this saddle from the occasional mishap. • Cutout Base for Soft Tissue Relief • Rails: Steel • Size: 254mm x 178mm • Weight: 545 Grams • Cover: Silk-Tech Lycra

With Serfas' high-tech base technology and Infinite Comfort System, the Men’s Dual-Density feels as comfortable as your living-room recliner. The anatomic channel relieves pressure from sensitive areas and the gel padding and shock-absorbing rubber inserts smooth every ride. Plus, the side and nose bumpers protect this saddle from the occasional mishap. • Cutout Base for Soft Tissue Relief • Rails: Steel • Size: 279mm x 171mm • Weight: 565 Grams • Cover: Silk-Tech Lycra

If you're looking for a saddle with plush comfort and a wide profile, Serfas' E-Gel Cruiser Elastomer fits the bill. It offers Serfas' cushy E-Gel Technology, a deep-groove design and elastomer springs for a super cushy ride. Plus, the wide perch and amazing comfort keep you smiling mile after mile. • Rails: Steel • Size: 279mm x 267mm • Weight: 1250 Grams

Let the comfort begin! The E-Gel Cruiser is an awesome seat thanks to Serfas' E-Gel technology that provides a plush ride. It features an elastomer suspension system which smooths out the bumps in the road. Plus, an anatomical cutout which relieves pressure on sensitive areas making every ride a fun ride. • Rails: Steel • Size: 279mm x 216mm • Weight: 885 Grams • Cover: Soflex

If you're looking for a saddle with plush comfort and a narrow profile, Serfas' E-Gel Hybrid Elastomer saddle fits the bill. It offers Serfas' cushy E-Gel Technology, a deep-groove design, and elastomer springs for a super cushy ride. Plus, the sporty style and amazing comfort keep you smiling mile after mile. • Rails: Steel • Size: 279mm x 171mm • Weight: 635 Grams • Cover: Soflex

If you're looking for a plush, comfortable saddle with a narrow profile and superior pressure relief, Serfas' E-Gel Hybrid fits the bill. It offers Serfas' cushy E-Gel Technology, a deep-groove design, and elastomer springs for a super cushy ride. Plus, the sporty style and amazing comfort keep you smiling mile after mile. • Rails: Steel • Size: 279mm x 171mm • Weight: 635 Grams • Cover: Soflex

If you're looking for a saddle to ride all day on, Serfas' E-Gel Reactive fits the bill. It offers Serfas' Reactive Gel technology, with a Serfas' Anatomic Groove Design for a super ride. Plus, the Soflex cover adds to the seamless cushiness to keep you smiling mile after mile. • Rails: Steel • Size: 267mm x 165mm • Weight: 620 Grams • Cover: Soflex

If you're looking for a saddle to ride all day on, Serfas' Women's E-Gel Reactive fits the bill. It offers Serfas' Reactive Gel technology, with a Serfas' women's-specific Anatomic Groove Design for a super ride. Plus, the Soflex cover adds to the seamless cushiness to keep you smiling mile after mile. • Rails: Steel • Size: 260mm x 178mm • Weight: 625 grams • Cover: Soflex

If you rack up the miles pedaling in place, you better be on a good seat. Serfas specifically designed the Exerciser RX saddle for outstanding comfort with their exclusive RX technology, which features a full-length anatomical groove and an elevated seat position to eliminate pressure. Plus, you’ll love its cushy Dual-Density padding. What's more, the split design allows the two sides of the seat to flex independently for even more comfort. • Designed for stationary bicycles (exercise bicycles) • Twin Bar Design • Rails: Steel • Size: 330mm x 318mm • Weight: 1340 Grams • Cover: Silk-Tech Lycra

Serfas' Exerciser saddle delivers excellent comfort so you can keep the pedals turning for hours. Its wide base offers outstanding support and its soft Reactive Gel pad molds to you for a custom fit. The grooved top eliminates pressure to sensitive areas, too. • Specifically engineered for stationary bicycles • Gel top layer • Deep Groove Design • Progressive Foam technology • Size: 324mm x 311mm • Weight: 1230 grams • Cover: Lycra

Deck you cruiser out with Serfas' full-suspension, Reactive Gel saddle. Its wide base and springs keep you feeling good wherever you pedal. And the gel inside conforms to your body for a custom fit. You'll also love the grooved top that eliminates pressure to sensitive areas. • Rear spring suspension • Full suspension base • Deep Groove design • Progressive Foam technology • Rails: Steel • Size: 260mm x 254mm • Weight: 1220 grams • Cover: Lycra

With Serfas' Full-Suspension Hybrid Reactive Gel saddle, you'll enjoy the simple pleasures of riding. Its spring suspension keeps you feeling great wherever you pedal. And the gel inside conforms to your body for a custom fit. You'll also love the grooved top that eliminates pressure for unbeatable comfort. • Rear spring suspension • Full suspension base • Deep Groove design • Progressive Foam technology • Rails: Steel • Size: 273mm x 184mm • Weight: 885 Grams • Cover: Lycra

End your seat discomfort by installing a Serfas Gel Saddle Pad. Thanks to super-plush gel, this sweet cover provides a level of comfort you have to feel to believe. Plus, it features easy drawstring installation, which means you can quickly move it between bikes if you ride more than one. There's no easier way to upgrade your bike and ride more comfortably. • Deep Groove for Increased Blood Flow • Gel For Increased Friction Protection • Easy Drawstring Installation

Serfas' Hybrid RX is a great upgrade for your favorite bicycle. For amazing comfort, it boasts a full-length groove that eliminates pressure and Serfas' Dual-Density padding. Plus, Serfas' Infinite Comfort System combines four layers for support that will last throughout your ride. What's more, the split design allows the two sides of the seat to flex independently to reduce friction.

Serfas' ICS Bar Tape offers superior comfort and vibration absorption thanks to its 3-layer Infinite Comfort System (ICS). This light, stretchy tape is easily installed and adds a touch of class to any bike. • Gel Infused Tape • Comfortable Gel Backing • 200mm Length to fit Aero and Flat Bar Systems • Gel Backing Reduces Road Vibration • Washable

Serfas' Women's Niva saddle sports a high level of comfort in a stylish, racy package. The cutout eliminates pressure on sensitive areas and also allows refreshing air to flow through. Plus, Serfas' Dual-Density padding smoothes the ride and the sloping nose makes it easier to move around, too.

Serfas' Performance RX saddle is your prescription for riding with comfort. It boasts a cutaway top that minimizes pressure, dual-density padding for cushioning, and a protective layer of friction-fighting Reactive Gel. What's more, the split design allows the two sides of the seat to flex independently for even more comfort. • Narrow Design for Endurance • Twin Bar Design • Rails: Chromoly • Size: 264mm x 158mm • Weight: 430 Grams • Cover: Waterproof, Breathable, Anti-Microbial Microfiber

Serfas' RX saddle is your prescription for riding in comfort. It boasts a cutaway top that minimizes pressure, dual-density padding for cushioning, and a protective layer of friction-fighting Reactive Gel. What's more, the Twin Bar design allows each side to flex independently for even more comfort while the four-way stretch Lycra top increases the saddle's longevity. • Twin Bar Design • Rails: Steel • Size: 267mm x 171mm • Weight: 485 Grams • Cover: Silk-Tech Lycra

Serfas' Women's RX saddle is your prescription for riding in comfort. It boasts a cutaway top that minimizes pressure, dual-density padding for cushioning, and a protective layer of friction-fighting Reactive Gel. What's more, the Twin Bar design allows each side to flex independently for even more comfort while the four-way stretch Lycra top increases the saddle's longevity. • Twin Bar Design • Rails: Steel • Size: 267mm x 171mm • Weight: 485 Grams • Cover: Silk-Tech Lycra

Serfas' RX Grips have been medically engineered to eliminate numbness and fatigue. Strategically placed Ulnar Grooves divert pressure from critical nerves and arteries. Plus, the diamond shape top layer and dual-density compound provides an excellent grip and absorbs vibration for a super-smooth ride and total control and comfort.

Serfas' RX saddle is your prescription for riding in comfort. It boasts a cutaway top that minimizes pressure, dual-density padding for cushioning, and a protective layer of friction-fighting Reactive Gel. What's more, the Twin Bar design allows each side to flex independently for even more comfort. • Twin Bar Design • Rail: Steel • Size: 267mm x 171mm • Weight: 485 Grams • Cover: Vinyl • Cover: Waterproof, Breathable, Anti-Microbial Microfiber

Serfas' Women's RX saddle is your prescription for riding in comfort. It boasts a cutaway top that minimizes pressure, dual-density padding for cushioning, and a protective layer of friction-fighting Reactive Gel. What's more, the Twin Bar design allows each side to flex independently for even more comfort. • Twin Bar Design • Rail: Steel • Size: 267mm x 171mm • Weight: 485 Grams • Cover: Vinyl • Cover: Waterproof, Breathable, Anti-Microbial Microfiber

With Serfas' Women’s Reactive Gel saddle, the only pain you'll feel is the sorrow of having to end your ride. Its unique gel padding molds to fit your anatomy for a perfect fit and the groove in the top eliminates pressure on sensitive areas. Plus, the reflective rear tabs increase your visibility so others know you're on the road too. • Progressive Foam technology • Deep Groove Design • Reflective Rear Tabs • Rails: Steel • Size: 260mm x 178mm • Weight: 555 Grams • Cover: Lycra

Serfas Reflective Bar Tape elevates nighttime visibility to another level by utilizing highly reflective material designed be seen in high traffic areas. Another step toward a safer ride, reflective bar tape is the perfect solution to increase safety and style on your bike. - Shock Absorbent - EVA Foam Backed For Comfort - Adhesive Backing For Easy Installation - Thickness: 3mm (0.12 inches) - Lightweight - Washable

Serfas' Silicone Bar Tape is comfortable, customizable, and long-lasting. You can get the ideal thickness because it stretches as you wrap it onto the bars. • Specifically made for use with gloves • Customizable thickness • Super stretchy • 200mm length to fit aero and flat bar systems • Rewrappable • Ultra shock absorbing

Combining Serfas' Reactive Gel on top and integrated elastomer springs in the base, the Super Cruiser delivers amazing comfort, cushioning and support. Plus, the deep groove decreases pressure on sensitive parts. - Rear elastomer suspension - Full suspension base - Deep Groove design - Progessive Foam technology - Rails: Steel - Size: 356mm x 356mm - Weight: 1725 Grams - Cover: Lycra

Serfas' Synthetic Cork Bar Tape offers great comfort, grip and vibration absorption. This light, stretchy tape is easily installed thanks to the adhesive back and adds a touch of class to any bike. • Thin, Lightweight and Stretchable • Adhesive Backing for Easy Installation • Shock Absorbent • Washable

Quick Overview Our latest addition to the Tailbones® family introduces a top layer of Memory Foam for a more personalized feel and added comfort. Serfas Tailbones® saddles supports the sit bones and provides a smooth comfortable ride using Progressive Density Foam while a Deep Groove Design allows maximum blood flow into the neurovascular bundle for drastically reduced numbness and discomfort. Features: - Top Layer of Memory Foam For Added Comfort - High Sit Area For Soft Tissue Relief - Progressive Foam Technology - Relaxed Riding Position - Rails: Steel - Cover: Waterproof Vinyl - Length: 277mm - Width: 176mm - Weight: 452g +/- 90 Day Comfort Guarantee We understand finding the perfect saddle can be tough, which is why every Serfas® saddle sold is backed by our 90-Day Comfort and Satisfaction Guarantee Limited Lifetime Warranty We stand behind our products and are committed to providing the high quality all of our customers deserve which is why Serfas® warrants to the original purchaser of a saddle that the product is free from defects in materials and workmanship for the lifetime of the product.

Quick Overview Our latest addition to the Tailbones® family introduces a top layer of Memory Foam for a more personalized feel and added comfort. Serfas Tailbones® saddles supports the sit bones and provides a smooth comfortable ride using Progressive Density Foam while a Deep Groove Design allows maximum blood flow into the neurovascular bundle for drastically reduced numbness and discomfort. Features: - Top Layer of Memory Foam For Added Comfort - High Sit Area For Soft Tissue Relief - Progressive Foam Technology - Relaxed Riding Position - Rails: Steel - Cover: Waterproof Vinyl - Length: 263mm - Width: 198mm - Weight: 520g +/- 90 Day Comfort Guarantee We understand finding the perfect saddle can be tough, which is why every Serfas® saddle sold is backed by our 90-Day Comfort and Satisfaction Guarantee Limited Lifetime Warranty We stand behind our products and are committed to providing the high quality all of our customers deserve which is why Serfas® warrants to the original purchaser of a saddle that the product is free from defects in materials and workmanship for the lifetime of the product.

Quick Overview Our latest addition to the Tailbones® family introduces a top layer of Memory Foam for a more personalized feel and added comfort. Serfas Tailbones® saddles supports the sit bones and provides a smooth comfortable ride using Progressive Density Foam while a Deep Groove Design allows maximum blood flow into the neurovascular bundle for drastically reduced numbness and discomfort. Features: - Rear Elastomer Suspension For Added Comfort and Shock Absorption - Top Layer of Memory Foam - Progressive Foam Technology - Relaxed Riding Position - Rails: Steel - Cover: Waterproof Vinyl - Length: 271mm - Width: 271mm - Weight: 878g +/- 90 Day Comfort Guarantee We understand finding the perfect saddle can be tough, which is why every Serfas® saddle sold is backed by our 90-Day Comfort and Satisfaction Guarantee Limited Lifetime Warranty We stand behind our products and are committed to providing the high quality all of our customers deserve which is why Serfas® warrants to the original purchaser of a saddle that the product is free from defects in materials and workmanship for the lifetime of the product.

Quick Overview Our latest addition to the Tailbones® family introduces a top layer of Memory Foam for a more personalized feel and added comfort. Serfas Tailbones® saddles supports the sit bones and provides a smooth comfortable ride using Progressive Density Foam while a Deep Groove Design allows maximum blood flow into the neurovascular bundle for drastically reduced numbness and discomfort. Features: - Dual Density Base - Memory Foam Inserts Under Sit Area - Progressive Foam Technology - Relaxed Riding Position - Rails: Steel - Cover: Waterproof Vinyl - Length: 261mm - Width: 164mm - Weight: 374g +/- 90 Day Comfort Guarantee We understand finding the perfect saddle can be tough, which is why every Serfas® saddle sold is backed by our 90-Day Comfort and Satisfaction Guarantee Limited Lifetime Warranty We stand behind our products and are committed to providing the high quality all of our customers deserve which is why Serfas® warrants to the original purchaser of a saddle that the product is free from defects in materials and workmanship for the lifetime of the product.

Quick Overview Our latest addition to the Tailbones® family introduces a top layer of Memory Foam for an even more personalized feel and added comfort. Serfas Tailbones® saddles supports the sit bones and provides a smooth comfortable ride using Progressive Density Foam while a Deep Groove Design allows maximum blood flow into the neurovascular bundle for drastically reduced numbness and discomfort. Features: - Rear Elastomer Suspension For Added Comfort and Shock Absorption - Dual Density Base - Memory Foam Inserts - Rails: Steel - Cover: Waterproof Vinyl - Length: 260mm - Width: 190mm - Weight: 566g +/- 90 Day Comfort Guarantee We understand finding the perfect saddle can be tough, which is why every Serfas® saddle sold is backed by our 90-Day Comfort and Satisfaction Guarantee Limited Lifetime Warranty We stand behind our products and are committed to providing the high quality all of our customers deserve which is why Serfas® warrants to the original purchaser of a saddle that the product is free from defects in materials and workmanship for the lifetime of the product.

Just as its name implies, the Tailbones Comfort Saddle is all about supporting your sit bones. The Deep Groove Design reduces numbness while the foam delivers a comfortable ride. The seat provides the right amount of absorption and support, and the Vinyl cover protects the saddle. • Rails: Steel • Size: 267mm x 171mm • Weight: 485 Grams • Cover: Vinyl