Skip to content
  1. Free Shipping on Orders Over $75
  2. Win a Kona Remote X eMTBLearn more

 360-594-2792

 info@lennysbikeshop.com

Shimano Dura-Ace CS-7900 Ultegra CS-6700 10-Speed 11t 1st Position Cog "B Fit" 105 CS-5800

Shimano Dura-Ace CS-7900 Ultegra CS-6700 10-Speed 11t 1st Position Cog "B Fit" 105 CS-5800

SKU: FW4667
Regular price $20.06 Sale price $25.56
Save 22%

Shipping calculated at checkout

Badge icon
Kona Remote X electric mountain bike giveaway

Kona Remote X Giveaway

Every $1 You Spend
Earns You an Entry

Shop for your chance to win a Kona Remote X eMTB, valued at $5,399!

View Giveaway Details →

No purchase necessary. Eligibility and terms apply. See details.

Expected Ship Date: Tue Aug 18
Shimano Dura-Ace CS-7900 Ultegra CS-6700 10-Speed 11t 1st Position Cog "B Fit" for 105 CS-5800. Shimano Dura-Ace CS-7800 & Ultegra CS-6700 6600 10-Speed Cassette Cogs
  • 1.6mm cog thickness
    • TECH SPECS
    Tooth Count 11

    QUALITY SERVICE

    Just real riders who strive to provide the best customer service.

    FREE SHIPPING

    Most orders over $75 ship free anywhere within the lower 48 United States

    RETURNS

    Not happy with your order, just send it back to us for a refund or exchange.

    Our Race Team Sponsors

    Also Supported By

    Our Race Team Sponsors

    Also Supported By

    Race Team

    Racing is a huge part of the culture at Lenny’s Bike Shop, and the Lenny’s Race Team represents the shop on trails and racecourses throughout the region. Made up of passionate riders who love pushing their limits, the team competes in gravity and mountain bike events while proudly representing the Lenny’s community.

    Why Shop with Lenny's?

    At Lenny’s Bike Shop, cycling isn’t just a business — it’s a passion. As a locally owned, full-service bike shop, Lenny’s is dedicated to helping riders of every level enjoy the sport with the right bikes, gear, and expert support.

    From high-quality bicycles and components to trusted service and advice, the team focuses on delivering products and support that help you ride more and ride better.

    Whether you’re upgrading your bike, tuning up your ride, or just getting started, you’ll find knowledgeable staff, great brands, and a commitment to keeping the cycling community rolling.

    Shopping Cart

    Your cart is currently empty

    Shop now