TRP Spyre SLC Review


TRP Spyre SLC: Duel Sided Mechanical Disc Brake

By creating a duel sided mechanical disc brake, TRP has brought the easy set up and adjustability of hydraulic disc brakes to mechanical disc brake users with the Spyre SLC.  In a market area often considered low end, the TRP Spyre SLC has many high end touches that make it stand above the competition like a carbon actuation arm for weight savings and a glossy silver finish.

The TRP Spyre SLC is a duel sided mechanical disc brake meaning both pads move like in hydraulic systems.  In a standard mechanical disc brake, only one pad moves which deforms the rotor and pushes it against a fixed pad.  Having both pads actuate provides a number of benefits including easy set up and adjustment, and the promise of even pad wear.

Initial installation of the TRP Spyre SLC was extremely quick and hassle free, just like hydraulic disc brakes.  In fact, the process of installing the TRP Spyre SLC calipers is the same as their hydraulic counter parts thanks to their self centering nature.  Pad distance from the rotor is adjusted with a 3mm Allen key on either side of the caliper.TRP Spyre SLCAdjusting for pad wear is easy as well thanks to the TRP Spyre SLC’s barrel adjuster.  As a mechanic, I would recommend moving the pads closer to the rotor by using the Allen key adjustment rather than pulling the cable with the barrel adjuster and taking up some of the actuation arm’s travel.  As said above, you just use a 3mm Allen key on either side of the caliper to move the pads in.  Unfortunately, due to the small size of the Allen key, it was difficult to adjust the inside pad with the rear wheel installed due to the cassette getting the way.  Having to adjust the pads without the wheel installed takes away from the ease of setup that is such a benefit with the Spyre SLC.

After a few weeks of riding and racing the TRP Spyre SLCs on my cyclocross bike, I definitely noticed a slight increase in power over other mechanical disc brakes.  They do not offer as much power as hydraulic disc brakes but they offer plenty for cyclocross or road applications when used with TRP’s recommended 160mm rotors.  The Spyre SLCs work with all cable actuated road levers so not matter what drivetrain you have you can make the upgrade to Spyre SLCs.TRP Spyre SLCThe TRP Spyre SLC suffer from the same spongy feel that plague other mechanical disc brake set ups which is caused by the compression of the housing.  TRP recommends that you use compressionless cables and housing to improve brake feel, a recommendation that I intend to follow in the future.

In conclusion, TRP Spyre SLCs bring a number of benefits once exclusive to hydraulic disc brakes to the mechanical disc brake market thanks to their duel sided design.  Easy to install and adjust with good braking power in an attractive, lightweight package makes the TRP Spyre SLC a great option for anyone in the market to upgrade the mechanical disc brakes on their cyclocross or road bikes.

TRP Spyre SLC Good:

  • High end look with carbon actuation arm and glossy silver finish
  • Easy to install and adjust
  • Good stopping power

TRP Spyre SLC Bad:

  • Small Allen key pad adjustment a little finicky

Looking for more cyclocross content?  Check out this post on tires, tubes and air pressure.  Or click here for more reviews.

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