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HATTA R9400 68mm
The most popular Keirin bottom bracket among professional Keirin racers’ worldwide.
Pro’s choice! NJS certified product.
109mm length & fits 68mm BB shells
1.37" x 24T - English threading
Mirror Finished Ball Race
ISO Taper
Weight: 308g
Made in Japan
SHIMANO DURA-ACE TRACK BB-7700 68mm NJS
This bottom bracket uses both ball and needle bearings to reduce flex for greater power transmission efficiency.
NJS approved!
BB Shell width: 68mm
Axle Length:109.5mm
Mount: splined crank arm mounts
Sealed Cartridge Unit
Weight: 173g
Made in Japan
SUGINO 75 Super Lap BB-SG75 The "Super Lap" differs from the standard version by adding mirror-polishing to the races on both spindle and ball cups. Super Lap has mirror finish ball race 11 Ball Retainer Keirin (NJS) approved bottom bracket SG75 Taper "Superlap" model: includes cups, bearings, lockrings, spindle, shield,...