Offering a precisely balanced ride between low weight reactiveness and tough build reliability, the PR 1600 DICUT 21 works for the strongest of riders. Tubeless ready and with a high-end aluminum rim it is equally at home on long weekend rides collecting vertical as it is on a quick evening ride to forget everything office related. Its precisely machined hubshells and the light-but-strong bladed spokes are World Tour proven, if you decide to get into race mode. Always good to know.
Ratchtet System 18 T / 20° engagement
The engagement angle is the degree to which a hub spins freely before transfering the riders power to the wheel. The smaller the angle, the faster the leg power reaches the ground, so a smaller engagement angle is generally better. It is important to know though, that there are limits on the minimally possible angle, as the reliability of the free wheel system partially depends on the angle too. What makes the Ratchet System hubs truly unique, is the fact that all teeth of the two ratchets engage simultaneously every time. Pawl hubs in comparison engage only a couple pawls simultaneously. Furthermore, in the case of pawl hubs, the contact surface is rather small, whereas in the case of the Ratchet System, the whole front face engages, creating much smaller point loads. The result is the legendary reliability of the Ratchet System hubs and distinctive sound as the star ratchets rotate against each other!
Pro Lock is a process where a patented, dual compound, adhesive liquid is injected into the nipple thread, allowing for extremely durable wheel builds. By threading the nipple onto the spoke the adhesive is activated and starts to harden. Retruing the wheel is still possible after the adhesive has hardened completely, with only a minimal decrease of its thread-lock function.