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Extralite Black-Lock 12x148mm Boost Rear Thru-Axle

Extremely light thru-axles for 12mm thru axle Boost frames. Their unique design ensures a prefect function with a well balanced dimensioning.

The notched area of the thread get reinforced by the allen groove and locking/tightening forces do not affect the axle with useless torsional stress.

Machined with our usual Extra-care, makes you save up to 50g! The bronze washer adds a smooth action, a tricky nice touch.

AL 7075 T6 CNC Axle
6mm Allen on thread side
Bronze self lubing washer
Laser etched graphics
100% made in Italy

Mfr Claimed Weight

Model Compatibility Head type Total length Thread length Thread pitch Weight
BlackLock 12.1 B Shimano E-Thru Boost Flat 178 18 M12x1.5 31g
BlackLock 12.2 B Specialized X-12 Boost Conical 166 17 M12x1 31g
BlackLock 12.3 B Maxle "Boost" 182 Flat 182 20 M12x1.75 30g
BlackLock 12.4 B Scott Boost, Cannondale F-si 2019 Flat 172 17 M12x1 29g