Skip to main content.
Bikes. Parts. Chaos.
Safety
Begin typing to search, use arrow keys to navigate, click or press Enter to select an item.

This is Ogre, Troll’s big wheeled brother sister. Troll and Ogre offer the same ability to accommodate a wide array of drivetrains, brakes, and cargo-hauling accessories. The main difference is that Ogre runs on 29˝ wheels, the Troll on 26˝.

Built of 4130 CroMoly steel and based on the tried-and-true geometry of our venerable Karate Monkey, Ogre is designed to be a platform for exploration, commuting, trailer-pulling, on-road and off-road touring, and just riding along. Ogre features, mounts for linear-pull and disc brakes, three bottle cage mounts (the mounts on the top of the downtube allow higher or lower cage placement depending on your needs), ample room between the stays for high-volume rubber up to 2.5˝, and housing guides designed to accommodate three lines which cleanly organize full shift and brake housing.

Ogre comes with our suspension-corrected (80mm) fork with threaded mounts for fenders and a rack. It will run cantilever or disc brakes so you can choose a system that best suits your stopping needs. Both fork and frame allow the use of a fender, disc brake, and rack at the same time. That’s surprisingly unusual in many modern frames. The fork also sports triple-boss bottle cage mounts, one set on each side. Each cage can be run in a high or low position, or you can run oversized Anything Cages.

The frame is spaced for 135mm hubs, with the same rear-loading horizontal dropouts as our Troll. The dropouts feature a derailleur hanger, slotted disc brake mounts, M10 x 1mm threaded holes for mounting Surly Bill & Ted trailer-connecting hardware (or B.O.B. Nutz), and a dedicated anchoring point for a Rohloff OEM2 axle plate. We designed a ton of versatility into these dropouts so you can run a singlespeed, internally geared hub or full derailleur drivetrain, with disc or rim brakes, with or without racks and fenders, with new or older parts, whatever best serves you. Framesets and complete bikes are available in sizes small through XXL (equivalent to 24˝). The complete bike parts spec is durable and sensible…just the sort of value you expect from a Surly.

If you’re like us, your bike needs will likely change by the day, week, month or year. Ride it to the office during the day, rip some local single-track after work, use it to tote crates of freakishly-large tubers next weekend, and tour that stretch of off-the-beaten-path double-track next month. With Ogre, you can do that.

Specifications

Ogre Geometry - 2017
units:

Select a few bike sizes to compare.

SIZE Small (16) Medium (18) Large (20) xLarge (22) xxLarge (24)
Reach 15.5 394.9 16.3 415.1 16.9 428.6 17.3 440.1 17.8 451.7
Stack 23.3 591.1 23.7 602.5 24.2 614.0 24.7 628.2 25.3 642.5
Head Tube Angle 71.0° 71.5° 72.0° 72.0° 72.0°
Head Tube Length 3.5 90.0 3.9 100.0 4.3 110.0 4.9 125.0 5.5 140.0
Seat Tube Length 16.0 406.4 18.0 457.2 20.0 508.0 22.0 558.8 24.0 609.6
BB Drop 2.7 68.0 2.7 68.0 2.7 68.0 2.7 68.0 2.7 68.0
Wheelbase 41.2 1046.1 41.9 1064.9 42.4 1076.8 43.0 1093.0 43.7 1109.2
Chainstay Length 17.0 431.0 17.0 431.0 17.0 431.0 17.0 431.0 17.0 431.0
Top Tube Length, Actual 22.0 557.7 22.6 575.0 23.2 589.9 23.9 607.1 24.7 627.1
Top Tube Length, Effective 22.7 575.6 23.6 599.3 24.3 616.3 24.9 632.2 25.5 648.1
Seat Tube Angle 73.0° 73.0° 73.0° 73.0° 73.0°
Standover Height 30.0 762.9 31.2 792.7 32.4 822.5 33.6 853.5 34.8 884.4
Fork Length 18.4 468.0 18.4 468.0 18.4 468.0 18.4 468.0 18.4 468.0
Fork Rake 1.7 43.0 1.7 43.0 1.7 43.0 1.7 43.0 1.7 43.0

All dimensions are preliminary and subject to change * Standover is measured from the top of the TT, at the center, with a tire measuring approximately Ø737mm

Select a few bike sizes to compare.

SIZE SM MD LG XL
Reach 15.6 395.5 16.2 410.5 16.8 427.6 17.6 447
Stack 23.3 592 23.8 603.4 24.1 613 24.9 632
Head Tube Angle 71.5° 72.0° 72.0° 72.0°
Head Tube Length 4.3 110 4.7 120 5.1 130 5.9 150
Seat Tube Length 16.0 406.4 18.0 457.2 20.0 508 22.0 558
BB Drop 2.7 68 2.7 68 2.7 68 2.7 68
Wheelbase 41.3 1049.4 41.9 1064.5 42.7 1084.6 43.7 1110
Chainstay Length 17.3 440 17.3 440 17.3 440 17.3 440
Top Tube Length, Actual 21.5 545.6 22.1 560.7 22.8 580.2 23.9 607
Top Tube Length, Effective 22.6 575 23.4 595 24.2 615 25.2 640
Seat Tube Angle 73.0° 73.0° 73.0° 73.0°
Standover Height 30.1 763.5 31.3 795.7 32.5 824.5 33.8 857.85
Stem Length 2.8 70 3.1 80 3.5 90 3.9 100
Stem Angle 6° 6° 6° 6°
Handlebar Width 27.6 700 29.1 740 29.1 740 29.1 740
Crank Length 6.7 170 6.9 175 6.9 175 69 175
Fork Length 17.6 447 17.6 447 17.6 447 17.6 447
Fork Rake 1.7 43 1.7 43 1.7 43 1.7 43
Tubing

Surly 4130 Cromoly steel. Main triangle custom double butted. Tig Welded. ED coated.

Rear Dropouts

Horizontal slotted with derailleur hanger. 145mm Gnot-Boost O.L.D. features Rohloff torque arm slot and threaded eyelets for fenders, racks, and Surly trailer mounts.

Brake Compatibility

(Disc and rim brake compatible. Disc mounts are 51mm IS Rim brake pivots are removable. Note: rear disc brake is limited to 160mm maximum rotor diameter and requires the use of Surly caliper adapter (included with frames and bikes).

Braze-ons/extras

Full-length Surly Trip Guide housing line guides for derailleurs and brakes; two sets of bottle cage mounts; removable post cantilever pivots; upper seatstay threaded barrels, 4 sets of triple bottle mounts, mid-and low-blade fully threaded through-blade fork eyelets; threaded holes for racks, fenders and trailer mounting nuts; Rohloff OEM2 axle plate mounting slot.

Seatpost Diameter

27.2mm

Seatpost Clamp Diameter

30mm (Surly stainless included)

Headset/Steerer Tube

1-1/8" threadless

Front Derailleur Clamp Diameter

Rover Brown:

31.8mm, top-pull or Shimano high direct mount (adaptor included)

Tanish Gray and Blacktacular:

28.6mm, top-pull or Shimano high direct mount (adaptor included)

Bottom Bracket Shell

73mm shell width, threaded standard English (1.37" x 24t)

Chainring Clearance

24/36/48t

Tire Clearance

29 x 2.5" or 27.5 x 3"

Fork

TIG-welded tapered & butted 4130 CroMoly, non-suspension corrected, tapered straight blade. Low- and mid-blade fully threaded through-blade rack eyelets; fender mount eyelets at dropout; 1-1/8˝ x 260mm threadless steer tube, 51mm disc mount (180mm max. rotor diameter), removable cantilever pivots, two sets of triple bottle mounts on each fork blade. Note: you can’t always mount bottles on the fork with every rack.

Thru Axle

HU0134 Surly 12x142/148 Rear Thru Axle

Colors

Rover Brown

Blacktacular

Tanish Gray

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.