Though the Troll’s geometry is that of a 26˝-wheeled mountain bike, it’s unlike most bikes you’ll find on your local bike shop floor. It has ample clearance for 28/38/50t mountain-triple chainrings and room for 26 x 2.7˝ tires. The gusseted front triangle, with its sloping toptube, provides generous standover clearance even when running high-volume rubber.
Build it with a 100mm suspension-corrected fork, or roll the 4130 CroMoly Troll fork. The stock fork is spec’d with canti pivots, disc mounts, low- and mid-blade rack bosses and fender eyelets. Run a rack fender and disc at the same time, no jury-rigging required.
The Troll frame features horizontal rear-loading dropouts with a derailleur hanger, disc caliper mounting slots, and rack and fender bosses. There’s a dedicated area for anchoring a Rohloff hub OEM2 axle plate, and they’ve included threaded M10 x 1mm holes for installing Surly trailer-mounting nuts or B.O.B. Nutz. The dropout design allows the simultaneous use of a rack, fender and disc brake. They include canti pivots, too.
Use the Troll as a mountain bike, cruiser, commuter or touring rig. Make it your go-to utility tractor. Try out different tires and handlebars. Add some racks, build it with gears, or strip it down to a singlespeed drivetrain. Take it camping, ride it to the grocery store or session on your favorite single-track. Build it up, ride it for a while, then reinvent it.
Like many of the Surly models, the Troll is available as a frameset
or as a complete bike.
Frame Surly Troll, Surly 4130 CroMoly steel. TIG-welded. Main triangle double butted
Fork Surly Troll, Surly 4130 CroMoly steel. TIG-welded. 1-1/8˝ threadless steer tube, uncut
Crankset Andel RSC6, 24/34/46t. Black
Bottom Bracket Shimano UN-55, 73 x 122mm. Hollow spindle, square taper
Front Derailleur Shimano Deore, model 590. 28.6mm. Top pull
Rear Derailleur Shimano Deore, Model 590SGS. 9-speed
Cog or Cogset Shimano HG-61, 11/34
Chain SRAM PC-970, Silver
Headset Cane Creek 40, 1-1/8˝ threadless. Black
Brakes Avid BB7, cable actuated. 160mm rotors front & rear
Brake Levers Avid FR-5, Black
Shifters Shimano Deore, 3 x 9 Rapidfire
Stem Kalloy AS-008, 25.4mm bar clamp. Aluminum. 4-bolt face. Black
Handlebar Surly, Open Bar. 666mm. No rise
Saddle WTB SST Comp, steel rails. Black vinyl. Feels pretty o.k.
Seatpost Kalloy SP-342, 27.2mm. 350mm. Black
Extras Surly stainless steel post clamp, 14g DT Swiss spokes
Front Hub Shimano Deore Disc, model M529, 32h, QR. Black
Rear Hub Shimano Deore Disc, model M529, 32h, QR. Black
Rims Alex Adventurer, 26˝. 32-hole. Black w/machined sidewalls
Tires Kenda Kiniption, 26 x 2.3˝. Steel bead
Frame Size Stem Length Stem Angle Handlebar Width Crank Length
xSmall 100.0mm 7.0° 660.0mm 170.0mm
Small 100.0 7.0 660.0 170.0
Medium 110.0 7.0 660.0 175.0
Large 120.0 7.0 660.0 175.0
xLarge 130.0 7.0 660.0 175.0
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