NEW Surly Grappler Gravel Bike Frameset - 27.5, Steel, Purple Dust Bunny - 210000060903
The Grappler is Surly’s dedicated drop-bar trail bike. With mountain geo designed around a comfortable, confident drop-bar hand position, it’s lively and responsive on single track, double track, and other degraded surfaces. Ready to haul essential gear for all-day dirt rides and quick bikepacking excursions, thru-axles front and rear provide ideal stiffness and handling. Built around 27.5” wheels and compatible with internally geared hub and single-speed setups, Surly’s tried-and-true Gnot-Boost spacing allows riders to run 142mm or 148mm rear hubs.
Features
- 100% Surly Chromoly steel frame and fork, featuring Surly’s proprietary ’Natch tubing, double-butted main triangle, 1-1/8” headtube, non-suspension corrected
- Horizontal-slotted dropout, Surly Gnot-Boost spacing
- Seatstay-mounted bottle bosses, plus three-pack mounts at the top and bottom of the down tube and stealth dropper post routing
- E.D. coated frame for increased life expectancy
- 27.5 x 2.8” tire clearance (with or without fenders)
Specifications
- Color: Purple Dust Bunny
- Wheel Size: 27.5"
- Brake Type: Disc
- Platform: Grappler
- Fork Type: Rigid
- Rear Axle: 12mm Thru x 145mm
- Frame Material: Steel
- TT (Effective): 640
- Defined Color: Purple
- Mfg Size: Large
- Front Axle: 15mm Thru x 110mm
- Frame Type: Rigid
What our Experts Think
- Purpose-built gravel and off-road frameset designed for riders who want stability, control, and confidence on rough terrain.
- Chromoly steel construction delivers a smooth, compliant ride that absorbs vibration on long gravel and mixed-surface rides.
- 27.5" wheel focus prioritizes traction, maneuverability, and control on loose, technical, or unpredictable surfaces.
- Progressive, adventure-oriented geometry enhances stability on descents while staying capable on climbs and rolling terrain.
- Wide tire clearance supports high-volume gravel and MTB-style tires for added comfort and grip.
- Multiple mounting points make it highly suitable for bikepacking, expedition setups, and utility-focused builds.
- Built for durability and real-world abuse, making it ideal for remote riding and long-distance exploration.
- “Purple Dust Bunny” finish adds a bold, distinctive aesthetic that stands out while maintaining Surly’s rugged identity.
Q&A
Q: What is the Surly Grappler Frameset designed for?
A: The Surly Grappler is a drop-bar mountain/gravel frameset built for technical gravel, singletrack, bikepacking, and off-road touring where stability and control matter more than speed.
Q: What material is the frame made from?
A: It uses 4130 Chromoly steel (Surly Natch tubing), delivering durability, vibration damping, and long-term reliability on rough terrain.
Q: What makes the Grappler different from a standard gravel bike?
A: It features MTB-inspired geometry with a long reach, slack angles, and stable handling, making it more capable on rough trails than traditional drop-bar gravel frames.
Q: What wheel size does it use?
A: The frameset is optimized for 27.5" wheels, offering improved control, traction, and comfort on technical and loose terrain.
Q: What drivetrain compatibility does it support?
A: It is designed around modern wide-range 1x drivetrains and supports drop-bar MTB-style builds for maximum gearing flexibility.
Q: Does it support bikepacking setups?
A: Yes. It includes multiple mounting points for racks, bottles, and cargo systems, making it highly suitable for loaded touring and adventure riding.
Q: What type of rider is the Grappler best for?
A: Riders who want a stable, confidence-inspiring steel frameset for aggressive gravel, rough backroads, and mixed-surface bikepacking routes.
Q: What is special about the “Purple Dust Bunny” color?
A: It is a distinctive deep purple finish that stands out visually while maintaining Surly’s rugged, utilitarian aesthetic.
Maintenance Tips
Damage 
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