The TRP TRAIL EVO HD-M843 rear hydraulic disc brake brings 4-piston stopping power to trail and enduro bikes needing reliable, modulated braking at the rear wheel. Designed to complement the front TRAIL EVO for a matched, consistent braking system.

  • 4-piston caliper for strong, even clamping force across a wide range of conditions
  • 5mm hose with mineral oil fluid — smooth feel and fade resistance on long descents
  • Rear-specific model (left-hand lever, Australian setup)
  • Compatible with 2.3mm rotors only — rotor not included

TRP's TRAIL EVO caliper uses a proven 4-piston design with alloy construction to keep weight in check without compromising rigidity. The mineral oil system is easy to maintain and delivers a consistent lever feel from the first pull to the last. The 5mm hose suits most MTB frame routings.

Compatible with standard post mount and IS mount disc brake adaptors. Requires a 2.3mm thick rotor — not compatible with standard 1.8mm rotors. Rotor is sold separately. Suitable for 27.5" and 29" trail and enduro MTB.

Warranty claims for this product should be directed to Tune Cycles. Return the item to us with proof of purchase and we will manage the warranty process with the brand on your behalf.
  • 4-piston hydraulic caliper delivers powerful, consistent stopping force for trail and enduro riding
  • 5mm mineral oil hose for reliable, fade-resistant braking performance
  • Alloy caliper construction balances strength and weight
  • Compatible with 2.3mm rotors only — ensures proper pad-to-rotor clearance and braking feel
  • Rear-specific brake for left-hand lever (Australian standard: left lever = rear brake)
SpecificationValue
TypeHydraulic disc brake
Piston count4-piston
Wheel positionRear
Lever sideLeft hand (Australian standard)
Hose diameter5mm
Rotor thickness compatibility2.3mm only
Fluid typeMineral oil
ColourBlack
SKU BPW-TRP091R
Model # TRP091R
Brand TRP

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