3X cranks will never die! The XM557-3X was reworked but has all the advantages of the XM557-plattform due maximum bottom bracket compatibility and weight.
Detachable 3-spd spider for a 104/64 mm BCD chainrings included.
Smart Spindle System
- Fully CNC machined (Light Alloy 7022/7010/7051), anodized with noble lasered logo
- Crank arm length: 175 mm - 165 mm, 170 mm and 172.5 mm on request
- chainline: 50 mm
- Q-Factor: 164 mm
- U-Factor: 147 mm
- K-Factor: 96 mm
Developed in cooperation with Tune 2010, the “Smart Spindle System” serves as the basis for all B.O.R MTB cranks and secures for installing B.O.R. cranks into 11 different bottom bracket types.
Overview of all compatible bottom bracket types:
BSA68 / BSA73 / BSA73 MTB eType / ITA70 / BB30/73 MTB Cannondale / BB85/84,5 MTB Specialized / PF30/73 MTB / BB386EVO/91,5 MTB PRESSFIT / BB Right/84 MTB PRESSFIT / BB92/89,5 sym. MTB Pressfit / BB92/92 asym. MTB Pressfit
The specific bottom bracket is available separately.
Smart Drivetrain Concept
B.O.R. provides a versatile usability of the crank. Even regular with a spider or "Plug and Play"- power measurement on the spider. So B.O.R cranks are “Power Meter-ready” and enable the simplified retrofitting of measuring units from SRM and Power2Max!
Spindle length, chain line, K-factor and Q-factor of this crank was designed for regular cross-country, marathon and all-mountain frames! These usually have a rear dropout clearance of 135-148 mm.
Not usable for downhill or enduro bikes!
Standard arm length 175 mm - for 165, 170 or 172.5 mm please contact our service team.
A Shimano cassette tool (such as the Park Tool FR-5 Freewheel Remover) is required to mount the lock nut. The crank is supplied without a manual.