Transition has long been standing behind the “by riders for riders” anthem. They build bikes they like to ride, and it turns out, we like a lot of the same things. They were not the first to have high end carbon frames or the lightest bikes out there, but they always build bikes that are a ton of fun to ride and can handle any trail. When we heard about the Spur, we were intrigued; how would Transition tackle an ultralight, short travel trail bike? Well, we have had our hands on one for the last few months to find out. We never knew 120mm could be this good.
Right out of the box, the Spur is a looker. A long and sleek top tube connects to the seat stays in a strait line that stands out against any lineup. We received the X01 build, which included 800mm Oneup bars, and short 35mm stem, and DT swiss 1700 aluminum wheels. Right away, you can tell this is not your typical XC trail pinner, it has the pedigree to shred. Transition spec’d a full SRAM X01 drivetrain, G2 brakes with 160mm rear and180mm front, and the suspension was all SID. Full build is just over 25lbs on our scales, which is the lightest bike we have ever seen from Transition.
The frame is a full carbon custom Toray fiber blend that focuses on balancing weight and strength, which proved to be true as we took some big rock hits to the frame during testing. Along with looking the part, the Spur has all the right angles for a sweet spot trail machine: head tube 66.0, seat tube 75.9, chainstay of 435mm, and a reach of 480mm. One unique weight savings area on the Spur is the one piece flex stay rear triangle which allows for a slight flex of the seat stays, eliminating a pivot. The leverage curve is near linear at the top with a 30% progression as you work in with a nice dash of anti-squat. The shock is a 190x45mm which provides for 120mm of travel with optional volume spacers but a 190×37.5mm shock could be fitted to reduce travel to 100mm.
Transition specs Enduro Max sealed bearings throughout, a threaded bottom bracket, and over molded rubber chainstay and down tube protectors to protect your investment. There is room for a bottle on the top of the down tube plus an accessory area on the bottom of the top tube and if you are real thirsty, an extra bottle can be mounted on the bottom of the down tube.