Change gearing, or bring an older Praxis road crank up to LevaTime II shifting, with one kit. The X-Kit pairs Praxis's forged LT2 X-Spider with a matched set of X-Rings, ready to bolt onto any Praxis 3-bolt direct mount road crank.

Highlights

• Complete spider and ring set, so a gearing change is a single swap at the crank
• LevaTime II X-Rings: a stiffer 5 mm big ring with forged shift pins for quicker, snappier shifts
• Cold-forged 7075-T6 aluminium spider and rings
• Four gearing choices: 48/32, 50/34, 52/36 and 53/39
• Rubber spacer included for Praxis's narrower alloy road cranks

LevaTime II shifting

Praxis moved the LT2 big ring to a thicker 5 mm plate, which gave its engineers room to forge in more shift features and faster-engaging shift pins. The inner and outer rings are designed and timed together as a matched set, and the beefed-up X-Spider keeps the pair stiff when you shift under load. The X-Spider uses a 4-bolt 160/104BCD pattern, so every Praxis X-Ring set from 48/32 to 53/39 fits the same spider.

Check the 12-speed marking

Current LT2 kits are marked "10/11/12sp" on the big ring and work with Shimano, SRAM (regular or Flattop) and KMC 10, 11 and 12-speed chains. Praxis notes that earlier production marked "10/11sp" is not 12-speed compatible. If you run 12-speed, ask us to confirm the marking on the kit you're ordering.

Fitting

Fitting is a separate workshop service and isn't included in the price. The kit mounts to the crank with three T25 Torx bolts at 9 Nm. Leave the included rubber spacer in for Praxis alloy road cranks and take it out for Praxis carbon road cranks, or the spider won't sit flush. The Tune workshop can swap the kit, reset your front derailleur for the new ring size and torque everything to spec.

Compatibility & fit

• Praxis 3-bolt direct mount (DM) road cranks with a removable spider.
• Not for Praxis cranks with an integrated (non-DM) spider.
• Shimano Di2 and mechanical, SRAM eTap/AXS and mechanical, and Campagnolo EPS and mechanical 10/11/12-speed drivetrains, on sets marked "10/11/12sp".
• Other brands' 3-bolt direct mount cranks: Praxis says the kit may physically bolt on, but the spider cutout may not clear the arm and it can't predict the chainline, so it doesn't guarantee the fit.

Options