A 29in wheel trail bike might not have been quite what everyone was expecting from the German company YT, a brand well renowned for its big-hitting, long-travel bikes. Will its first foray into the world of big wheelers create the same buzz as its now legendary Capra though?
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YT Jeffsy CF Pro spec overview
- Frame: Jeffsy carbon 29"
- Shock: Fox Float DPS Factory
- Fork: Fox 34 Float
- Rear derailleur: SRAM X01
- Shifter: SRAMX01
- Cassette: SRAM XG 1175
- Chain: SRAM PCX1
- Brakes: SRAM Guide Ultimate
- Wheelset: DT Swiss XMC1200 Spline
- Front and rear tyre: Onza Ibex
- Stem: Renthal Apex
- Handlebar: Renthal Fatbar carbon black
- Saddle: SDG Circuit
YT Jeffsy CF Pro frame and equipment
YT wanted to ensure the Jeffsy fitted in with the rest of the bikes in its line-up, so designed it around a short stem and riser bar. The stumpy head tube also allows for the stem to be lifted/lowered on the steerer tube to help riders get bar height just where they want it.
The V4L suspension system pumps out 140mm of rear wheel travel, all of which is tamed using Fox’s Float DPS EVOL shock in a bid to deliver a supportive stroke that can be used to push hard and ride fast. There are two geometry settings that are easy enough to switch between thanks to the flip chip located in the rearmost shock mount, letting you slacken the head angle out from 68.9 to 67.6 degrees, which in turn drops the bottom bracket by 8mm.
Chainstay length is dependent upon which size frame you go for, with the small and medium sporting a 435mm chainstay while the large and extra-large use a lengthier 440mm offering in a bid to balance handling.
Other points to note include the Boost 12x148mm rear axle spacing, plenty of integrated chainstay protection, room for a water bottle (albeit the custom YT cage only) and, for the most part at least, external cable routing. Interestingly, although the back-end gets the Boost treatment, YT is using non-Boost (meaning the front wheel isn’t as stiff as it could be) 140mm Fox 34 forks and with the shorter offset up front.
YT Jeffsy CF Pro ride impression
YT Jeffsy CF Pro early verdict
You can read more at BikeRadar.com
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