Welcome our new Gutter Seal Technology! Gutter drastically improves sealing against the elements while reducing seal drag. We’ve designed a fresh new cup forging for a new high-end look. A new standard in external bearing performance!
Gutter Seal Technology
Improved tool engagement
Sealed cartridge bearings
English or Italian threads
Ceramic bearings, Red ano finish.
Specifications for SRAM RED BB
BEARINGS: ABEC-1 Rating, Grade 10 chrome alloy steel balls, Stainless steel races
MATERIAL/FINISH: AL - 6061-T6 Cups
WEIGHT: 53g (BB30), 105g (GXP)
Besides serious weight savings, this bottom bracket means narrow Q-factor, more ankle clearance, greater bearing durability and stronger crank construction.
GXP’s Gutter Seal design cuts friction and weight—improving both feel and performance.