Shimano BB-7900 Dura-Ace Bottom Bracket | 36×24 Ita | Hollowtech II | 68mm Shell

Description

Shimano BB-7900 Dura-Ace Bottom Bracket | 36×24 Road | 68mm Shell

Notes from MyBikeThing The BB-7900 represents Dura-Ace level engineering with its precision aluminum cups and optimized bearing placement. What sets this component apart is Shimano’s proprietary bearing design that provides exceptional durability while maintaining minimal friction.

Condition Cup threads are pristine with no visible wear or damage. All parts have been thoroughly cleaned and inspected. Bearings spin smoothly with no play or roughness. Wondering about exact tolerances or installation specs? I’m Paul – send me a message and I’ll share my hands-on experience with these classic Dura-Ace components. “You put in the miles, we put in the work! 30 day Guarantee, rest assured of fit, function and condition.”

Workshop Wisdom Keep the drive side cup tight – a dab of blue Loctite on the threads can prevent loosening while still allowing future removal. Always torque both cups to spec (35-50 Nm) to prevent creaking.

Tech Specs

• Material: Aluminum cups with sealed bearings
• Shell width: 68mm
• Thread spec: 36×24 ITA
• Spindle Type: Hollowtech II compatible
• Weight: 92g (cups + sleeve)
• Compatibility: Shimano Hollowtech II cranks
• Included: Both cups, center sleeve

Value Assessment

• Market Value: $45-65
• Original Retail: $89

Worth it because:

• Premium Dura-Ace quality construction
• Exceptional bearing design and durability
• Perfect for period-correct builds
• Complete set with all original components

Have questions about bottom bracket compatibility? We’re cyclists too and love talking tech. Contact us through MyBikeThing’s workshop line for detailed bottom bracket fitment and installation advice.