Surly Ghost Grappler 27.5 Frameset


A Trail Bike Tailored for Drop Bars

Off-road enthusiasts have been Frankensteining drop bars onto trail bikes for decades, so we designed the Ghost 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 Ghost 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) 
Custom build only

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Available as a custom build only

Unfortunately, due to Covid19 related supply issues, this product is currently only available as part of an in-house Commuter custom build.

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Application: Gravel
Wheel Size: 27.5″ (650B)
Size: S, M, L, XL
Frame Material: steel (CrMo)

Technical Information – Frame:Wheel Standard: 12 x 142 mm, 12 x 148 mm (Boost), 10 x 135 mm (with adapter)
Axle Type: 12 mm Gnot Boost thru-axle
Seatpost (Ø): 30.9 mm
Seatpost Clamp(Ø): 33.1 mm
Headset: EC34/28.6 – EC 34/30
Bottom Bracket Standard: BSA
Shell Width: 73 mm
Chainline: 53 mm (Boost)
Brake Mount: IS 2000
Front Derailleur Mount: high clamp (34.9 mm)
Cable Routing: external, mechanical
Bottle Cage Mounts: 5

Technical Information – Fork:Steerer Tube: 1 1/8″ – 1 1/4″ tapered
Wheel Standard: 15 x 110 mm (Boost)
Axle Type: 15 mm thru-axle
Brake Mount: IS 2000
Offset: 50 mm
Steerer Tube Material: steel (CrMo)
Blade Material: steel (CrMo)

Approved For:Tyre Size (max.): 27.5 x 2.8″
Chainrings: 1x, 2x
Chainring Size (max.): 1x 36 tooth, 1x Boost 38 tooth, 2x 26-36 tooth, 2x Boost 32-39 tooth

Technology:Gnot Boost:
The Surly Gnot Boost technology allows the mounting of different over locknut dimensions on the rear wheel. Rear wheels with 12 x 142 mm or 12 x 148 mm thru-axles can be mounted by clamping or spreading the frame. Wheels with an over locknut dimension of 135 mm can be operated in frames with Gnot Boost technology using the rear wheel axle adapter.

Stack: 604 mm
Reach: 405 mm
Seat Tube Length: 386 mm
Effective Top Tube Length: 590 mm
Head Tube Length: 180 mm
Chainstay Length: 425 mm
Wheelbase: 1088 mm
BB Drop: 50 mm
Seat Tube Angle: 73°
Head Tube Angle: 69.5°
Standover Height: 762 mm

Stack: 623 mm
Reach: 420 mm
Seat Tube Length: 437.2 mm
Effective Top Tube Length: 610 mm
Head Tube Length: 200 mm
Chainstay Length: 425 mm
Wheelbase: 1109 mm
BB Drop: 50 mm
Seat Tube Angle: 73°
Head Tube Angle: 69.5°
Standover Height: 796 mm

Stack: 641 mm
Reach: 444 mm
Seat Tube Length: 488 mm
Effective Top Tube Length: 640 mm
Head Tube Length: 220 mm
Chainstay Length: 425 mm
Wheelbase: 1140 mm
BB Drop: 50 mm
Seat Tube Angle: 73°
Head Tube Angle: 69.5°
Standover Height: 830 mm

Stack: 660 mm
Reach: 458 mm
Seat Tube Length: 539 mm
Effective Top Tube Length: 660 mm
Head Tube Length: 240 mm
Chainstay Length: 425 mm
Wheelbase: 1162 mm
BB Drop: 50 mm
Seat Tube Angle: 73°
Head Tube Angle: 69.5°
Standover Height: 863 mm

Manufacturer Numbers:S: FM1161
M: FM1162
L: FM1163
XL: FM1164

Contents:- 1 x Surly Ghost Grappler frame
– 1 x Surly Ghost Grappler rigid fork

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