Shimano Dura-Ace BB-7700 Octalink Bottom Bracket
Item number: 900
The Shimano Dura-Ace BB-7700 bottom bracket has proven itself over decades
The Shimano Dura-Ace BB-7700 is an Octalink bottom bracket with 8-splined interface that has been in service for decades. It fits perfectly with the Dura-Ace Track crank FC-7710. Its cold-forged hollow axle increases rigidity.
Specifications:
- Application:
- Track, Road
- Series:
- Dura-Ace 7700
- Type:
- BSA, ITA
- Shell Width:
- 68 mm, 70 mm
- Axle Length:
- 109.5 mm
- Axle Type:
- Octalink (Road)
- E-Type Compatibility:
- no
- Chaincase Compatibility:
- no
Technical Information:
- Bearings:
- steel
- Axle Material:
- steel
- Bottom Bracket Cup Material:
- aluminium
Compatibility:
- Octalink crank arms with eight-speed splines for shorter grooves (Octalink MTB)
Recommended for:
- Dura-Ace FC-7710
Features:
- 8-splined interface of bottom bracket axle and crank
- cold forged hollow axle for increased stiffness
- diagonally tapered ribs for permanent load-bearing connection of bottom bracket axle and cranks
- maintenance-friendly
- more efficient power transfer
Technology:
OctalinkIn Shimano's Octalink system, the bottom bracket and crank are connected by an 8-tooth contact surface. This provides greater rigidity and greater load capacity, especially compared to conventional square systems.
Models:
BSA 68x109.5:- Threads:
- BSA
- Shell Width:
- 68 mm
- Axle Length:
- 109.5 mm
- Manufacturer Number:
- I-BB7700B09N
ITA 70x109.5:
- Threads:
- ITA
- Shell Width:
- 70 mm
- Axle Length:
- 109.5 mm
- Manufacturer Number:
- I-BB7700I09N
Contents:
- 1 x Shimano BB-7700 bottom bracket
Order Together:
Weight:
- universal/BSA 68x109.5: 173 g
Related Products
- 100 day return period
- Online since 1998
