The SRAM group’s new top-level downhill cranks have already won two downhill World Championships as part of the company's BlackBox racing programme. The carbon arms themselves are the same as the X0 trail cranks, but beefed up with pedal thread inserts and a thicker-walled axle to cope with the biggest landings.
The alloy spider is a dedicated single-ring version for increased chain guide clearance rather than just a converted triple. This gives it a very stiff and direct feel through your shoes for excellent power delivery and course communication. The carbon construction also stings less over big rocks and drops compared to heavy-duty alloy sets. There’s a full range of bottom brackets, and the price is great for the performance this crankset gives.