PRV28-C (ProX Road Rim-brake 28mm width clincher) carbon rims are equipped with high TG resin brake surface (with small grooves on the surface). 

Such high TG 3K grooved brake surface is able to bear higher temperature while braking, and the heat can be eliminated sooner, which makes our carbon rims more durable. 

- Small grooves provide more friction, less lever force is needed, and the braking distance can be shorten for about 30%.

- Small grooves make water clearance easier, improve the performance in wet condition.

- Reduce noise, avoid squeal during braking.   

Such upgraded brake surface greatly improves the service life of our rim-brake carbon rims. We offer 2 years' quality warranty for all our carbon bike rims.

(In fact, most riders have been used our carbon rims much longer than 2 years.)