Extralite Black Lock QR15 Boost

A new way to Block

- Weight: 29gr (RockShox 15.4), 28gr (Fox), 26.7gr (RockShox 15.4B)
- Axle: Al 7075 T6 CNC
- Front skewer for 15mm Boost hub axle
- Special: Bronze self lubing washer
- Graphics: laser etched
- Extremely light thru-axles

RockShox 15.4B: compatible RockShox Boost 110mm, not compatible with Sid Ultimate 2021
 

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 Extralite usual Extra-care, makes you save up to 50g!
The bronze washer adds a smooth action, a tricky nice touch.
Black Lock are supplied separately from Extralite wheelsets.

100% made in Italy

Specs FOX :
-total length (from under axle head to end of thread) : 156mm
-Thread length: 14mm
-Head shape: flat
-Thread type: M1.5 (i.e. 10 threads have a 15mm length)

Specs RockShox 15.4B:
-total length (from under axle head to end of thread) : 156mm
-Thread length: 12mm
-Head shape: flat
-Thread type: M1.5 (i.e. 10 threads have a 1.5mm length)