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Grappler is a drop-bar trail bike built for single-track sessions, all-day dirt rides, and bikepacking excursions.

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) 

Bike Capabilities

  • 4/5 with Singletrack Singletrack: 4 out of 5
  • 5/5 with Doubletrack Doubletrack: 5 out of 5
  • 4/5 with Gravel Gravel: 4 out of 5
  • 4/5 with Bikepacking Bikepacking: 4 out of 5
  • 5/5 with Phantom Fighting Phantom Fighting: 5 out of 5

NOTE: You can ride your bike wherever the hell you want, but this is what we think this bike is best at.

Surly Grappler bike side view in forest next to singletrack
Surly Grappler seat tube decal detail
Surly Grappler tire clearance view looking from rear tire and seat stays
Surly Grappler close-up of frame at seat tube junction showing dropper seat post
Surly Grappler Natch Tubing decal close-up on down tube near bottom bracket
Surly Grappler front three-quarter view
Surly Grappler fork and front wheel detail
Surly Grappler rear wheel and drive-side dropout detail

Related Content

Steel Yourselves. The Surly Grappler Is Here

by Surly
Thursday, February 17th, 2022
Read More
Read more blog posts about Grappler

#grappler Image Dump

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Tag your Instagram Images with #SurlyMakeItYourOwn and your bike may show up here.

Where to Buy

Surly Grappler complete bike, Purple Dust Bunny color studio photo

Specifications

Frameset

Frame
100% Chromoly Steel frame, Natch tubing, double-butted main triangle, TIG welded, E.D. coated
Fork

100% Chromoly Steel fork, Natch tubing, double-butted tapered fork blades, TIG welded, E.D. coated

Seatpost Clamp
Surly Stainless 33.1

Components

Headset
Cane Creek 40
Brake Calipers
Tektro Mira
Brake Levers
microSHIFT AdventX
Rotors
Tektro 180/160
Shifters
microSHIFT AdventX
Stem
Promax DA-296, 31.8mm
Handlebar
Salsa Cowchipper
Grip/Tape
Black Cork
Saddle
WTB Volt
Seatpost
TranzX YSP15, 30.9, 100mm travel

Drivetrain

Crankset
Samox, 32t
Bottom Bracket
Samox BSA
Front Derailleur
N/A
Rear Derailleur
microSHIFT ADVENT X
Cassette
microSHIFT ADVENT X, 11-48t, 10-spd
Chain
KMC X10

Wheels

Front Hub
Novatec 15 x 110mm, 6-bolt, 32h
Rear Hub
Novatec 12 x 148mm, 6-bolt, 32h
Rims
WTB ST i40 TCS 2.0
Tires
Teravail Ehline, 27.5 x 2.5", Light and Supple, Tan Sidewalls
Complete Bike Weight
30 lb 5 oz. for Medium

Frameset

Frame
100% Chromoly Steel frame, Natch tubing, double-butted main triangle, TIG welded, E.D. coated
Fork

100% Chromoly Steel fork, Natch tubing, double-butted tapered fork blades, TIG welded, E.D. coated

Seatpost Clamp
Surly Stainless 33.1

Components

Headset
Cane Creek 40
Brake Calipers
Tektro Mira MD-C400
Brake Levers
microSHIFT AdventX Dual Control Levers
Rotors
Tektro 180/160
Shifters
microSHIFT SB-M100A, AdventX Dual Control Levers
Stem
Promax DA-296, 31.8mm
Handlebar
Salsa Cowchipper 31.8mm
Grip/Tape
Cork, Black
Saddle
WTB Volt 142
Seatpost
TransX YSP15 Dropper, 360mm, 100mm travel

Drivetrain

Crankset
Samox BSA 2PCS Boost 32t
Bottom Bracket
Samox BSA
Front Derailleur
N/A
Rear Derailleur
microSHIFT M6205
Cassette
microSHIFT 11-48t
Chain
KMC X10 Black

Wheels

Front Hub
Novatec 15x110mm, 32h
Rear Hub
Novatec 12x148mm, 32h
Rims
WTB ST i40 TCS
Tires
Teravail Ehline, 27.5 x 2.5", 60tpi

Complete bike spec subject to change

MY24 Grappler Geometry - 27.5
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 31.3 795.0 32.7 829.0 34.0 862.0
Stem Length 2.33 60 2.33 60 2.33 60 2.33 60 2.33 60
Stem Angle 0° 0° 0° 0° 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

*Standover is measured from the top of the TT, at the center, with a tire measuring approximately Ø714mm

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

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.