A 10-speed double for mountain bikes that still run a front derailleur, set up for Boost frames with a 38-24T ring pairing and a BSA 73mm threaded bottom bracket in the box.

Highlights

• 38-24T chainrings on 104 / 64 BCD
• Alloy 38T outer, steel 24T inner
• 52mm chainline (Boost)
• Rated by Prowheel for 10-speed
• Forged AL-6061-T6 arms, black sand anodised
• BSA 73mm threaded bottom bracket included

Two rings, wide range

The 38T outer ring gives speed on fire roads and descents, while the 24T inner ring brings the low gears steep climbs need.

What you get

The crankset with its 38T and 24T chainrings, plus a BSA 73mm threaded bottom bracket.

Compatibility & fit

For Boost-spaced frames (Prowheel VORTEX-501-TT-B, 52mm chainline). The included bottom bracket suits frames with a BSA (English-threaded) 73mm shell. Prowheel also offers this crank with a BB92 press-fit set, which is not included. Prowheel rates the VORTEX-501-TT for 10-speed drivetrains; pair it with a 10-speed double front derailleur. Fitting is a separate workshop service and isn't included. Our Marrickville workshop can fit the crankset and bottom bracket and check your chainline.

Sizes & options