Enduro 6903 ABEC-3 Sealed Cartridge Bearings 17x30x7 2pk Fit Hubs & Suspensions

2 -Enduro ABEC-3 Sealed Cartridge Bearings 6903
Fit Hubs and Suspension Systems requiring 6903 17x30x7 bearings (Fits Most TREK Rapid Drive Hub Hub Systems) 
If the bearing you are replacing is not marked with a manufacturer number, measure it and compare to specifications listed below
Enduro's blue dual lip labyrinth seals on both sides of each 6903 bearing (photo without seal illustrates retainer and bearings inside sealed bearing unit. 
Enduro Standard Design Cartridge Bearings
90% filled with Mobilux NGLI 2 synthetic grease, dual-lip labyrinth seals
Model: Standard Cartridge Bearing
Brand: Enduro
ID x OD x W (mm):17x30x7
Thickness: 7mm
Bearing O.D.: 30mmMaterial: Steel
Bearing I.D. (mm): 17mm
Cartridge bearing with metal cage separated Grade 10 ball design
Manufacturer Number: 6903
Manufacturer Part Number: BB 6903 LLB-BAG
UPC: 810191012511