Enduro Angular Contact Bearing MRA1728 17 x 28 x 7 Variant:Enduro Angular Contact Bearing ABEC5 MRA 17287 LLB 17 x 28 x 7 mm These Ceramic-Hybrid bearings feature 52100

These Ceramic-Hybrid bearings feature 52100 High-Carbon Chromium alloy races paired with grade 5 Silicon-Nitride Ceramic Balls with 90% fill

Cast stainless steel

Super compatible

In 2010 Castelli introduced the Gabba to the pros and changed the way pros race in the rain and cold

Enduro Angular Contact Bearing MRA1728 17 x 28 x 7 Variant:Enduro Angular Contact Bearing ABEC5 MRA 17287 LLB 17 x 28 x 7 mm These Ceramic-Hybrid bearings feature 52100MR 17287 LLU MAX BO MAX Design, Black Oxide, ABEC 3, radial suspension bearing 17mm x 28mm x 7mm Enduro Bearings pioneered MAX type bearings almost 20 years ago for bicycles to address the challenges associated with mountain bike pivots. MAX type bearings provide 35 40% more load capacity than standard radial bearings by utilizing a special design where the maximum number of balls are inserted into the bearing, via a custom ground slot in the races.