Sirris F43 CMX Fork for Arctic Leopard XE Pro R | 240mm Rotor

This Arctic Leopard XE Pro R fork is the Sirris F43 CMX set up for the R's 240mm front rotor, with 220mm of travel and a black billet drop clamp. The XE Pro S and Enduro take a different F43.

Specs:

• 220mm travel, upside down architecture - full-size MX layout on a lightweight E-moto chassis.
• Sized for 240mm rotors; 240mm rotor brake bracket included.
• Arctic Leopard XE Pro R wheel spacers included.
• Ships with the drop clamp in black: 800mm total length.
• 43mm stanchions in high tensile steel with hard chrome - stiff legs that track straight under braking.
• Seamless 7050 aluminum outer tubes and damper bodies, type 3 hard anodized - resists scratches and wear.
• 775mm free length.
• 178mm fork spacing - clears dirt or street tires.
• Symmetrical closed cartridge damping with dual oil circuits - lubrication and damping oil stay separate, so the feel stays consistent lap after lap.
• Hydraulic bump stop - controls bottoming on big hits without giving up stroke.
• Tool-free external compression adjuster; rebound adjusts with a tool - dial it in at the trail.
• Billet 6061 aluminum triple clamps, type 2 anodized; seamless 7050 aluminum steer tube.
• Motorcycle-style top cap - sets steering bearing tension more consistently.
• NOK MX seals, Daido MX bushings, 210 degree high impact PP guards.
• 4kg per leg.
• Clamp options: Drop clamp in black.
• Spring rates for the Arctic Leopard XE Pro R: Medium 4.0/3.6, Heavy 4.0/4.0 (left / right) - sized to this bike, not a one-rate fork.
• Sirris part family 430-99-039.

Fits the Arctic Leopard XE Pro R:

• Arctic Leopard XE Pro R

Does NOT fit: Arctic Leopard XE Pro S (separate F43 listing), Arctic Leopard XE Pro Enduro (separate F43 listing)

Sirris F43 Fork FAQ

Which spring rate do I pick for the Arctic Leopard XE Pro R?

Pick by rider weight without gear; 15 pounds of gear is already built into the ranges. Medium covers 140 to 180 pounds with 4.0/3.6 springs. Heavy covers 180 to 220 pounds with 4.0/4.0 springs. Rates are listed left side / right side.

Why is there a separate R version?

The XE Pro R runs a 240mm front rotor, so its fork carries a 240mm brake bracket. The S and Enduro use a 220mm bracket and a different F43 listing.

Is there a matching rear shock?

Yes. The Sirris R38 2SC fits all three Arctic Leopard XE Pro models and is tuned to pair with the F43 CMX. It runs with the TMB R38 linkage, sold separately.

What can I adjust without tools?

Compression adjusts by hand on the outside of the fork. Rebound uses a tool. Sirris recommends about 5 hours of riding before you make big clicker or valving changes.

Do the weight ranges include riding gear?

Yes. The ranges are your weight without gear, and Sirris has already added 15 pounds of gear into each range. Weigh yourself in street clothes and pick from there.

Ships from USA!