A Trail Bike Tailored for Drop BarsOff-road enthusiasts have been Frankensteining drop bars onto trail bikes for decades, so Surly designed the Grappler to scratch that itch with a little more precision. Engineered first and foremost around a stable and comfortable drop-bar hand position, its trail-ready geo provides a spirited ride on mixed terrain.Cleared for girthy tyres and decorated with an array of mounts for hauling your daily provisions and overnight gear, the Grappler is ready to take you and your paraphernalia down that overgrown fire road for an extrasensory experience. There's nothing to be afraid of. Probably.Featuring Surly's versatile Gnot-Boost spacing, allowing riders to run 142mm or Boost 148mm rear hubs; thru-axles; stealth dropper post routing; non-suspension correctedCustom dropouts ready to run single-speed or internally geared hub setupsSeatstay-mounted bottle bosses, plus three-pack mounts at the top and bottom of the down tubeClearance for 27.5 x 2.8" or 29 x 2.1" tyres (with or without mudguards)
Surly - Grappler - Frame Set - Subterranean Homesick Blue
Frame Construction
100% Surly Chromoly Steel frame, Natch tubing, double-butted main triangle, TIG welded, E.D. coated
Fork Construction
100% Surly Chromoly Steel fork, Natch tubing, double-butted tapered fork blades, TIG welded, E.D. coated
Rear Dropout Configuration
Horizontal slotted with optional vertical dumpout
Rear Hub Spacing
"Gnot-Boost" 145mm; 12 x 142mm or 12 x 148mm (Surly axle included); 10 x 135mm with Surly 10/12 Adapter Washers (not included)
Front Hub Spacing
15 x 110mm (Surly axle included)
Rear Brake
Disc - 51mm I.S. (203mm max rotor)
Front Brake
Disc - 51mm I.S. (203mm max rotor)
Headtube
Ø34mm
Steerer Tube
Ø28.6mm
Crown Race
Ø30mm (1-1/8")
Stock Headset Upper (S.H.I.S)
EC34 or ZS34
Stock Headset Lower (S.H.I.S)
EC34
Seat Collar
33.1mm
Seatpost
Ø30.9mm
Front Derailleur (Clamp)
High direct mount top-pull (Ø34.9mm) 26mm offset adapter (not included) for 142 or 135mm rear hub spacing 29mm offset adapter (not included) for 148mm rear hub spacing
Max Chainring (CL) [3]
1x (mtn): 36T
2x (mtn): 36/26T
1x (Boost): 38T
2x (Boost): 39/32TBottom Bracket
73mm BSA, threaded
Tire Clearance Frame [1]/[2]
27.5 x 3” (27.5 x 2.8” with fender)
29 x 2.1–2.5” with or without fender (2.1” clearance with wheel all the way forward; 2.5” clearance with wheel all the way back in dropout)Tire Clearance Fork [1]
27.5 x 2.8” (27.5 x 2.6” with fender)
29 x 2.2” (29 x 2.0” with fender)Rigid Fork Spec
420 x 50mm
Design Suspension Fork Length [4]
N/A
Max Suspension Fork Length [4]
420mm
Bottle Mounts Frame
3-pack mounts on upper and lower downtube; seat tube bottle mounts on frame sizes S–XL
Bottle Mounts Fork
3-pack mounts on each fork blade
Rack Mounts Frame
Yes (upper and lower threaded)
Rack Mounts Fork
Yes (upper and mid-blade threaded)
Fender Mounts Frame
Yes
Fender Mounts Fork
Yes
Other Features
Internal dropper post routing