Replacement crankarms for Bosch Generation 2 & 4 (ISIS) systems. Genuine replacement parts Get back on your bike with these replacement Bosch crank arms. - Gen2 & 4 Bosch systems use small (15-22t) chainrings without spiders - Equipped with a chain ring guard for use without a frame mounted chain guard
Please note: Manufacturers can sometimes change the specification of the products from time to time.
|Sizes||170MM, NO RING, 175MM, NO RING,|