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TRP G-Spec Trail SL brakes review

Solid brakes for trail riding

Our rating 
3.5 out of 5 star rating 3.5
GBP £150.00 RRP | USD $160.00 | EUR €180.00 | AUD $260.00
per brake (excluding rotor)
TRP G-Spec Trail SL brakes

Our review

Tricky to bleed, but decent power and solid lever feel make them good for those who like a firm bite-point
Pros: Flex-free lever and firm bite-point create a solid feel; consistent bite-point makes braking intuitive once you’re used to the lack of modulation
Cons: Firm bite-point isn’t for everyone; not the most powerful; tricky to bleed with the stock kit; poor ergonomics without £10 shifter mount
Skip to view product specifications

The Trail SL is near-identical to TRP’s Aaron Gwin-designed G-Spec DH brake, but with a lighter lever body. At 333g (rear brake, without rotor or hardware), it weighs fractionally more than the similarly-priced SRAM Code R (319g).


My brakes required bleeding after cutting the hoses, but my first effort, using TRP’s £10 bleed kit, was ineffective. The second (successful) attempt employed a Shimano bleed cup to allow oil to flow through the brake.

SRAM shifters don’t fit neatly next to the lever clamp so need to be set about a centimetre further inboard, which can make reaching the shift paddles a bit of a stretch.

SRAM Matchmaker and Shimano I-Spec II kits are available separately, for £10, to fit shifters more ergonomically.

TRP G-Spec Trail SL brake lever
The G-Spec Trail’s consistent lever allowed me to focus on riding.
Steve Behr / Immediate Media

Once properly bled, the lever doesn’t pump up like on many Shimano brakes, and there’s no flex or play in the broad lever blade, creating a solid feel.

There’s no variable leverage ratio cam, as found in Shimano’s Servo Wave and SRAM’s SwingLink systems, which is good if you like a firm rather than well-modulated bite-point.


Power is ample, not astonishing, but the G-Spec Trail’s consistent lever feel let me forget about braking and focus on riding.

Product Specifications


Price AUD $260.00EUR €180.00GBP £150.00USD $160.00
Weight 333g – rear brake - exc. rotor
Brand Trp


Features Four Piston Forged Caliper; Light Weight Hybrid Pistons; CNC caliper with cooling fins; Aaron Gwin Designed Lever Blade
Brake type Hydraulic disc