RPM 9915ST Bottom Bracket – High-Performance Bicycle Crankset Bearing Assembly

Description

• ISIS Drive 68×113, 118, 128mm M15 Bolts
• *128mm uses M12 Bolts
• Forged hollow SCM4130 chromo spindle
• Industrial 6002KRS cartridge sealed bearings with oversized Ø3/16” balls
• Cold forged aluminium cups
• Double “snap” seals for water and dirt protection
• Cups: anodized, sleeve: zinc plated
WEIGHT
• 325 grams

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