Enduro Bottom Bracket Seals GXP MR 21537 Variant:Enduro Seal for SRAM GXP MR 21537 AL 21.5mm x 37mm - Designed to work with

- Designed to work with all 9

Double stitched chamois for uncompromised durability

giving you the best possible legroom when cycling and prevents any unnecessary rubbing

Generated speed: 24km/h (Tire dependent)

full uni-directional carbon chassis and dimpled Durolite upper for improved aerodynamics

Enduro Bottom Bracket Seals GXP MR 21537 Variant:Enduro Seal for SRAM GXP MR 21537 AL 21.5mm x 37mm - Designed to work withSE MR 21537 AL 6061 SRAM GXP Bottom Bracket Seal 21. 5mm x 37mm Enduro bearings are designed and built to last, but unfortunately sometimes some of the parts that surround them can still wear out. This light contact silicone seal is the same outer seal that comes with Enduro bottom brackets for SRAM GXP cranksets that feature the custom MR 2237E extended race bearing to provide additional protection against the elements.