Parts

Enjoy quality and reliability with the Shimano Tourney 6/7-speed rear derailleur. It makes use of Shimano SIS, HyperGlide, and Double Servo technologies for smooth, accurate shifts. - Wheel-type cable guide - Maximum cog size: 34t - Total capacity: 43t

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 Rear Derailleur Pulley Assemblies

Shimano's Ultegra bottom bracket uses Pro Tour-proven technology for lighter weight and super smooth spinning, while still maintaining the same level of durability and stiffness. It's available in English, Italian, or Press Fit models.

The uninterrupted shifting experience of the Shimano Ultegra CS-R8100 12-speed cassette range lets you climb, sprint, or cruise without stopping to think about your next gear change. Larger driving cogs maximize drivetrain efficiency and create compatibility with both Shimano 11 and 12-speed freehub bodies. Shimano HYPERGLIDE+ technology is integrated to provide seamless shifts both up and down the gear range. - Refined 12 step gear combination provides peak efficiency and accelerating performance for every racing situation - Faster, smoother shifts under maximum pedaling force - Compatible with 12-speed and road 11-speed freehub body

An integral part of the Shimano Ultegra 12-speed road lineup, the FC-R8100 crankset builds upon Shimano's legendary front shifting and transmission efficiency. With new refinements for seamless 12-speed shifting, the Ultegra crank is now offered in a wide variety of lengths, bringing performance and improved fit for smaller riders, triathletes, and riders with specific biomechanic requirements. - Optimal balance of stiffness, strength, weight and rotational performance - Hollowglide structure cuts weight yet maintains strength for better power transfer and quicker, more precise front shifting - 148mm Q-factor - 44.5mm chainline

Combining Shimano's Di2 platform and the road incarnation of Hyperglide+, the Ultegra FD-R8150 front derailleur shifts between chainrings with the fast and seamless action. - Small, sleek and lightweight front derailleur - Frontal area is smaller than previous designs to reduce aerodynamic drag - Top gear teeth capacity: 50-54t - 61-66 degree chainstay angle - Includes 1 SD300 port

- High-performance gear combinations provide superior rider choice - Hub body to fit a variety of bikes from MTB to road - Model Number: CS-HG800-11 - Series: Shimano - Average Weight: 335 grams

CN-HG701-11 Super Narrow HG-X11 Chain (11-speed) FEATURE - Directional 11-speed chain - More efficient and silent, less maintenance - MTB, Road, E-BIKE 11-speed compatible - Reinforced chain for E-BIKE use BENEFIT - Smooth and reliable shifting performance - Weight: 257g (116 Links)

Shimano chainrings offer durability and confidence-inspiring performance, and go a long way towards getting a drivetrain back to optimum working condition.

This replacement bolt unit ensures your I-Spec II shifters, dropper levers, and/or brake levers are securely fastened. Make sure your controls are ready to rip.

The Shimano Deore XT CS-M8100 12-speed cassette is optimized with rider-tuned wide-range and close step gear combinations for MTB excellence. - Shift ramp designs provide fast and smooth shifts by HYPERGLIDE+ technology - Light and stiff construction reduces cassette inertia resulting in faster acceleration and increased chain security - Designed with a Shimano Micro Spline body that features smaller and more widely distributed splines to limit cog damage on freehub - Cassette Body Type: Shimano Micro Spline - Cassette Cogs: 10-12-14-16-18-21-24-28-33-39-45-51 - Drivetrain Speeds: 12 - Range: 10-51

The Shimano Deore XT RD-M8100/M8120 rear derailleur is designed to provide smooth and stable shifting for 12-speed MTB drivetrains. - Offers fast and shockless shifting - The low-profile design includes a bumper added to the derailleur pulley cage - Shimano Shadow RD+ technology reduces chain slap and creates a quieter drivetrain - Includes large, 13T pulley - Long cage is designed to be used with 1x12 drivetrain systems - Rear Derailleur Mount Type: Shimano Rear Direct Mount, 10x1 Standard - Drivetrain Speeds: 12 - Cage Length: Long - Chain Wrap Capacity (teeth): 41 teeth - Largest Cog: 51 - Weight: 284 g - Rear Der/Shifter Compatibility: Shimano Mountain

- 9-speed compatible - XT/Ultegra - 116 links

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

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

Serfas' City Bike saddle is perfect for commuting through traffic in an upright riding position. The dual density base ensures your sit bones never hit a hard spot, and the woman's specific fit provides support in all the right places. On the rear, a handle doubles as a convenient way to carry your cable lock when in transit. Plus, it boasts durable steel rails and a waterproof vinyl cover that will extend the saddle's life. • Dual Density Base • Rails: Steel • Size: 260mm x 170mm • Weight: 459 Grams • Cover: Waterproof Vinyl

Combine retro styling with amazing comfort and you get Serfas' Cruiser Classic saddle. A central groove distributes your weight properly and plush padding smoothes the road. Plus, this sweet seat features a vintage look: 70’s-style rear chrome buttons and classic chrome rear springs. - Deep Groove Design - 70’s Style Rear Chrome Buttons - Classic Chrome Rear Springs - Rear Springs for Added Comfort - Rails: Steel - Size: 267mm x 248mm - Weight: 840 Grams - Cover: Vinyl

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

Let your developing rider enjoy big-time comfort courtesy of the Serfas Youth Reactive Gel saddle. It features a soft gel-top layer for maximum support as well as an element-proof saddle cover so they can test their skills in any weather. A groove down the middle eliminates pressure on sensitive areas, and the youth-specific size fits smaller cyclists to ensure that this saddle will be an instant favorite. • Deep Groove design • Progressive Foam technology • Rails: Steel • Size: 229mm x 140mm • Weight: 400 grams • Cover: Weather-proof

Connectors feature Serfas' great ergonomic, 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. • Ergonomic design • Comfortable gel top layer • Fits all twist shift systems • Dual density design • Open-end style for easy installation

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' Pro-Flo Lock-Ons offer cyclists superior contact, maximum comfort and minimized impact. These rider-tested, doctor-approved grips feature an increased palm pad to reduce pressure on the wrists and forearms and ulnar horn tabs to alleviate strain on the arteries of the hand. Plus, the dual-density design and tenacious lock-on clamp is soft on the hands, while being slip-free on your bars.

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.

Just as its name implies, the Tailbones Cruiser Saddle is all about supporting your sit bones on mellow cruises. Intended for cruiser bikes, the wide, cushy seat's rear spring suspension gives added comfort and a bit of extra shock absorption. The pressure-relief foam is blissful on every ride, and a 4-way stretch Lycra cover protects the saddle while moving with your body. • Rear Spring Suspension for Added Comfort and Shock Absorption • Progressive Foam Technology • Rails: Steel • Size: 265mm x 265mm • Weight: 1168 Grams • Cover: Lycra