The SR Suntour RUX38 EVO SF25 is a 29" suspension fork with 200mm of travel and an EQ air spring, for downhill and freeride riding.

  • 200mm of travel on 29" wheels
  • 20x110mm Boost thru-axle, tool-type: a stiffer, more secure front-wheel connection than a quick release
  • RC+-PCS-T damper
  • Tapered steerer
  • Post mount disc brake
  • Downhill and freeride

RC+-PCS-T damping gives external low-speed compression and rebound adjustment, with internal shim-based high-speed compression and rebound control. PCS (Piston Compensated System) is SR Suntour's sealed damper cartridge. The EQ air spring is SR Suntour's Equalizer system: it balances the positive and negative air chambers, so setting sag is a matter of pumping it to your weight. It has 38mm alloy stanchions, magnesium lowers and 50mm offset. Maximum rotor size: 220mm (post mount, 203mm direct). Largest suggested tyre: 29" x 2.8" (70-622).

SR Suntour suggests 15-20% sag for forks under 120mm of travel and 25-30% for longer-travel forks.

Fit and compatibility

Check it against your bike before you order: wheel size (29"), front hub (20x110mm Boost), head tube (Tapered) and brake (Post mount).

Not sure it suits your bike? Send us the make, model and year, plus your head tube, hub and brake details, and we'll check the fit before you order.

SR Suntour warranty. SR Suntour warrants its products against defects in materials and workmanship for between 6 and 24 months from the date of first retail purchase. The period depends on the product and is set out in SR Suntour's warranty document. SR Suntour's remedy is repair or replacement, at its discretion.

Not covered: normal wear, including oil, dust and oil seals, o-rings, bushings, bearings, stanchion tubes and cartridges; damage from crashes, misuse, incorrect installation or missing maintenance; modified parts; cosmetic marks; and stunt riding or racing. SR Suntour asks for a fault to be reported within 10 days of finding it, with photos, the serial number and the service history.

How to claim: return the item to Tune Cycles with your proof of purchase and we'll manage the claim.

Our goods come with guarantees that cannot be excluded under the Australian Consumer Law. You are entitled to a replacement or refund for a major failure and compensation for any other reasonably foreseeable loss or damage. You are also entitled to have the goods repaired or replaced if the goods fail to be of acceptable quality and the failure does not amount to a major failure.

  • 29" wheels, 200mm travel
  • 20x110mm Boost thru-axle, tool-type
  • RC+-PCS-T damper
  • EQ air spring
  • Tapered steerer
  • Post mount brakes
  • Grey
Wheel size29"
Travel200mm
Axle20x110mm Boost thru-axle, tool-type
SpringEQ air
DamperRC+-PCS-T
SteererTapered
Brake mountPost mount
Max rotor220mm (post mount, 203mm direct)
Offset50mm
Max tyre29" x 2.8" (70-622)
Stanchions38mm alloy
LowersMagnesium
ColourGrey
Model yearSF25
AlsoDownhill and freeride
Part codeS225G
SKU BPW-S225G
Model # S225G
Brand SR Suntour