Surly Krampus 29+
Krampus is the evolution of the 29er. It's not a fat bike. True, its got 3" tires on 50mm rims (we call this combination 29+). But where fat bikes are really designed for slow-speed crawling, Krampus's frame (geometry, tubing diameter/thickness) has been designed with a long toptube and as short a rear end as we could get away with given the wheel/tire size. This, when combined with the big, wide tires, results in a mad amount of rolling inertia and grip. It rips and responds well to body English. The big tires also offer a bit of suspension-like cushion. Krampus is a trail bike that also tackles all kinds of terrain. Krampus lives somewhere between bushwhacking, speed racing, and back lot dirt track riding, and all this makes it just plain fun to ride.
Krampus's hub spacing is standard 100mm front and 135mm rear, with rear-loading horizontal dropouts that accommodate a derailleur and single ring/cog drivetrains. It's got clearance for disc rotors up to 185mm and is designed to run a high direct mount standard front derailleur. This type of derailleur will allow the most clearance at the tire. Even though there is no need for the sort of frame offset you find on our Pugsley and Moonlander models, chain and derailleur clearance at the tire remains a serious consideration. If you plan to use standard width rims and tires, you'll be able to run a normal mountain triple crank. However, if you go with our 50mm Rabbit Hole rims and 3" Knard tires (and why wouldn't you?) then plan to use a 1x or 2x crank...a triple simply won't clear the tire. For best chain/tire clearance, we recommend either a Surly O.D. 2x crank or a 1x system. Other brands' 2x cranks will work but may cause some chain-on-tire rub in the easiest gear combo.
Got all that? O.K., then. Give it the juice and hang on.
Frame: Surly Krampus, Surly 4130 CroMoly steel. Main Triangle TIG-welded, custom butted. Sweet CS Yoke.
Fork: Surly Krampus, TIG-welded custom tapered butted 4130 CroMoly, 100-120mm suspension corrected, 1-1/8" steerer tube, 203mm disc brake clearance
Seatpost clamp: Surly Stainless, 30.0mm
Crankset: Shimano ZEE, 175. 170 on small
Bottom Bracket: Shimano ZEE, 175. 170 on small
Front DerailleurMRP 1x guide. BB mount, yep
Rear Derailleur: Shimano SLX/Shadow+ RD-M675, Black
Cog or Cassette: SRAM GG-1070, 10-speed. 11-12-14-16-18-21-24-28-32-36t
Chain: KMC x10, Silver
Headset: Cane Creek, 40 series for 44mm
Brakes: Avid BB7, 180/160 HS rotors
Brake Levers: Avid FR-5, Black
Shifters: Shimano SLX, 10-speed RH
Stem: Kalloy, 31.8mm. 60/70/80/90mm length
Handlebar: Salsa Wammy, 780mm width. 11° bend, flat
Saddle: Velo VL2155, Steel rails
Seatpost: Kalloy SP-324,
Extras: Chain guide
Front Hub: Surly Ultra New Disc, 32h. 6-bolt disc. Black
Rear Hub: Shimano FH-M529, 32h. Disc. Black
Rims: Surly Rabbit Hole 29+, 700c x 50mm w/holes
Spokes: DT Swiss, 14g
Tires: Surly Knard 29 x 3", 27tpi
AdditionalBuild and Setup information
***** First UK review: http://www.bikeradar.com/mtb...eview-surly-krampus-13-46694 *****