BOR Fatbike crank FB557 Basic 170/177 SmartSpindleSystem
The FB557 crank the German manufacturer BOR based on the proven XC666. However, changes and advancements let the weight of the FB557 continue tumbling down. In detail, this means a weight-reduced Lockring attached the also optimized Spider. Through the re-calculation of the crank arms additional grams were saved. The arms of the FB557 be attached to a rigid aluminum shaft with 30 mm diameter to meet even most powerful sprinter with excellent rigidity.
BOR typical system is the proven Smart Spindle is used, which allows the installation of the crank in almost any context. The modular system and the variety of spider and chainring combinations offered by BOR enable rapid adjustment of the crank on even the most challenging.
The FB557 Basic 170/177 is designed for frame constructed an RDS (Rear dropout spacing) have 170 or 177 mm. This means the rear hub has an installation width have 170 or 177 mm. The chain line and also affiliated tire clearance is optimal.
Made in Germany!
intended use: Fatbike
Material: alumnium (7022, 7010, 7051)
Crank arm: 170 mm, 175 mm (172.5 mm or 165 mm on request)
Shaft: 30 mm diameter
Q: 196 mm
RDS (Rear Dropout Spacing): 170 or 177 mm
Color crank arms: black
Color Spider / crank bolt: black, orange, red, blue or acid green
Weight: from 495g (without bottom bracket, without Spider / chainrings)
Delivery: 2x crank arms, including wave, 2x clamping screws, Locknut and lockring.
Note: a frame corresponding internal bearing, Spider or chainring and
Chainring bolts must be purchased separately.
All variations and more, you'll find in our extensive shop offer.