Titanium Gnarvester

All-Purpose 29+ Smile Machine

[nahr-vuh-ster] noun

1. any of various farm machines for harvesting gnar.

Another platform designed by the Surly folks, 29+ combines the superior rollover of 29″ wheels with the flotation and extra suspension of a fatbike. Surly’s Krampus was the test mule that proved 29+’s impressive rollover capability, and now it’s time for the next evolution.

The Gnarvester is Carver’s take on the platform, a impressively light and nimble frame that can make full use of ~50mm rims and 29+ tires. Featuring a tapered head tube and sliding dropouts, any steerer tube or rear axle is fair game for the Gnarvester. Wrap it up with a beautiful brushed finish and a frame weight under 4 pounds, and you’re ready to get out there and harvest some gnar!

  • Clearance for 29+ wheel/tire setups
  • 3.8 pounds in medium size
  • ZS44/ZS56 tapered head tube
  • Brushed Finish with Bead Blasted Logo
  • 135mm/142mm rear hub spacing
  • 73mm BB shell
  • Sliding dropouts – any axle type can be accommodated
  • 31.6mm seatpost
  • No front derailleur capability
  • Belt Drive Compatible


Reviews & Press

MTBVT Titanium Gnarvester Review

S.O.B. Gnarvester Review

Adventure Cyclist (V.42 No.3)

Dirt Rag (issue 183)



We build our Ti Gnarvester frames in 1” increments all the way up to 24″. Just scroll to the right so see specs for our larger frames

Seat Tube C-TN/A15in16in17in18in19in20in21in22in23in24in
Effective TTN/A22in22.5in23in23.5in24in24.5in25in25.5in26in26.5in
Head Tube LengthN/A100mm100mm100mm100mm100mm110mm140mm140mm140mm140mm
BB DropN/A75mm75mm75mm75mm75mm75mm75mm75mm75mm75mm
Head Tube AngleN/A70°70°70°70°70°70°70°70°70° 70°
Chainstay LengthSliding dropouts have a chainstay length range of 440mm—460mm
  • Geometry table is based on a 483mm axle-to-crown fork with 45mm offset, and a wheel diameter of 780mm with 29 x 3in tires
  • Seat tube length is measured from the center of the bottom bracket to the top of the seat tube.
  • Seat tube lengths of frames without internal dropper routing are measured C-TT