Surly Bikes
A Trail Bike Tailored for Drop Bars
Off-road enthusiasts have been Frankensteining drop bars onto trail bikes for decades, so we 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 tires 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 corrected
- Custom dropouts ready to run single-speed or internally geared hub setups
- Seatstay-mounted bottle bosses, plus three-pack mounts at the top and bottom of the down tube
- Clearance for 27.5 x 2.8” or 29 x 2.1" tires (with or without fenders)
Specifications
units:
Select a few bike sizes to compare.
| SIZE | XS | SM | MD | LG | XL |
|---|---|---|---|---|---|
| Rider Height | 4'8"+ 1.42m+ | 5'0"+ 1.52m+ | 5'5"+ 1.65m+ | 5'9"+ 1.75m+ | 6'0"+ 1.85m+ |
| Reach | 15.0 381.0 | 15.9 405.0 | 16.5 420.0 | 17.5 444.0 | 18.0 458.0 |
| Stack | 23.0 585.0 | 23.8 604.0 | 24.5 623.0 | 25.2 641.0 | 26.0 660.0 |
| Head Tube Angle | 69.5° | 69.5° | 69.5° | 69.5° | 69.5° |
| Head Tube Length | 6.3 160.0 | 7.1 180.0 | 7.9 200.0 | 8.7 220.0 | 9.4 240.0 |
| Seat Tube Length | 12.4 316.0 | 15.2 386.0 | 17.2 437.2 | 19.2 488.0 | 21.2 539.0 |
| BB Drop | 2.0 50.0 | 2.0 50.0 | 2.0 50.0 | 2.0 50.0 | 2.0 50.0 |
| Wheelbase | 41.6 1057.0 | 42.8 1088.0 | 43.7 1109.0 | 44.9 1140.0 | 45.7 1162.0 |
| Chainstay Length | 16.7 425.0 | 16.7 425.0 | 16.7 425.0 | 16.7 425.0 | 16.7 425.0 |
| Top Tube Length, Effective | 22.0 560.0 | 23.2 590.0 | 24.0 610.0 | 25.2 640.0 | 26.0 660.0 |
| Seat Tube Angle | 73.0° | 73.0° | 73.0° | 73.0° | 73.0° |
| Standover Height | 28.3 719.0 | 30.0 762.0 | 31.3 796.0 | 32.7 830.0 | 34.0 863.0 |
| Stem Length | 60 or 70 | 60 or 70 | 60 or 70 | 60 or 70 | 60 or 70 |
| Stem Angle | 6.0° | 6.0° | 6.0° | 6.0° | 6.0° |
| Handlebar Width | 15.7 400 | 16.5 420 | 17.3 440 | 18.1 460 | 18.9 480 |
| Crank Length | 6.7 170 | 6.7 170 | 6.9 175 | 6.9 175 | 6.9 175 |
| Fork Length | 16.5 420 | 16.5 420 | 16.5 420 | 16.5 420 | 16.5 420 |
| Fork Rake | 2.0 50.0 | 2.0 50.0 | 2.0 50.0 | 2.0 50.0 | 2.0 50.0 |
- 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): 39/32T
- Bottom 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
[1] Different tire and rim combinations will result in different clearances.
[2] Depending on drivetrain configuration, tire clearance may be limited by the chain and not the frame.
[3] Listed chainring clearance is worst case scenario. Clearances vary widely depending on components and configurations.
Support
Downloads
- Frame Sheet
[pdf] - 1.5MB - Fork Instructions
[pdf] - 6.9MB - Universal Thru-Axle Instructions
[pdf] - 269KB - Surly Bike Sizing Chart
[pdf] - 308KB - Bicycle Owner's Manual (English)
[pdf] - 1.2MB
Frame Warranty
LIMITED WARRANTY
This Surly product is warranted against defects in materials and workmanship for three years from the date of retail purchase of the product, subject to the limitations detailed below. Save your dated receipt for proof of purchase.
This warranty does NOT cover the following:
- Damage due to improper assembly or follow-up maintenance or lack of skill, competence or experience of the user or assembler
- Products that have been modified, neglected, used in competition or for commercial purposes, misused or abused, involved in accidents or anything other than normal use
- Installation of components, parts or accessories not originally intended for or compatible with bicycle as sold
- Damage or deterioration to the paint, surface finish, aesthetics or appearance of the product
- Normal wear and tear
- Labor required to remove and/or refit and re-adjust the product within the bicycle assembly
This limited warranty is expressly limited to the repair or replacement of a defective product, at the option of Surly, and is the sole remedy of the warranty. This limited warranty applies only to the original purchaser of the Surly product and is not transferrable. This warranty applies only to products purchased through an authorized dealer or distributor. In no event shall Surly be liable for any loss, inconvenience or damage, whether direct, incidental, consequential, or otherwise resulting from breach of any express or implied warranty or condition, of merchantability, fitness for a particular purpose, or otherwise with respect to our products except as set forth herein.
This limited warranty gives the consumer specific legal rights, and those rights and other rights may vary from place to place. This limited warranty does not affect your statutory rights.
TO THE EXTENT NOT PROHIBITED BY LAW, THESE WARRANTIES ARE EXCLUSIVE AND THERE ARE NO OTHER EXPRESS OR IMPLIED WARRANTIES OR CONDITIONS INCLUDING WARRANTIES OR CONDITIONS OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.