If you like riding hardtails on rugged trails, Curve Engineering’s Klonzo MKII frame could become your new long-term partner. Like all of Curve’s bikes the Klonzo is built from titanium, which offers a winning combination of durability and ride compliance that other materials just can’t match.
Bikerumor has checked out some of Curve’s bikes before, including the MKII softail XC and the belt-driven 714 C2 road frame, but this the first enduro frame we’ve seen from the brand. Designed with highly technical terrain in mind, the frame is intended to accommodate a 150-160mm fork, and fits 27.5” tires up to 2.8” wide.
The Klonzo MKII was named after a trail near Moab, Utah that Curve’s Olivier Ollagnier recently visited and thoroughly enjoyed. There was a previous version of the Klonzo, but the new MKII model has been updated with more aggressive geometry.
The Klonzo MKII is made entirely from 3AL/2.5v titanium, and to deal with enduro levels of abuse the rear triangle features thicker tubing than Curve’s XC frames. Curve offers fully customized geometry to buyers, but also produces frames in stock configurations as well…
The standard Klonzo features a 66° head angle and a 74° seat mast. While top tubes are growing longer on trail bikes, the Klonzo may be ahead of the curve (pun!) with a size medium coming in at a lengthy 625mm.
Curve’s simple and beefy looking chainstay yoke helps the frame fit wider tires while keeping the back end nice and short at just 422mm. The Klonzo’s standard rear end is Boost 148 spaced, but buyers can opt for a 142mm width if desired.
The frame uses a threaded 73mm BSA bottom bracket, and features internal routing for a dropper post. The rear brake and shifter cables run internally through the top tube, but are externally routed on the rear triangle. There is one bottle cage mount atop the Klonzo’s down tube.
Curve says a size medium Klonzo frame weighs 2050g with the seat clamp and rear axle included. The Klonzo MKII will sell for $1983, with the option of full custom geometry plus your choice of frame finish (brushed or sandblasted). Customers can also pick their sticker colors, or have the logos sandblasted onto the frame. Stock frames are available in S/M/L sizes.