Rear tire: 29×3.
Velopedia Bicycle Archive
Surly Krampus Rigid - First Loser
Original specifications: 29" wheels · geometry for 4 published sizes.
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At a glance
- Model year
- Not published by manufacturer
- Category
- Mountain
- Original MSRP
- $1,999.00
- Sizes
- S, M, L, XL
- Colors
- First Loser
- Geometry
- 4 manufacturer sizes
- In this record
- 22 specifications · 8 archived images · original MSRP · geometry
- Archive ID
- 900000885
Original buildSteel · 29"
Frameset
| Frame Construction | Surly Krampus - 100% Surly Chromoly Steel, Natch tubing, double-butted main triangle, trumpet flared tubes, TIG welded, E.D. coated |
|---|---|
| Frame Material | Steel |
| Fork | Surly Krampus - 100% Surly Chromoly Steel, Natch tubing, double-butted main triangle, trumpet flared tubes, TIG welded, E.D. coated |
| Fork Material | Steel |
Drivetrain
| Shifters | Shimano M6100 Deore |
|---|---|
| Rear Derailleur | Shimano Deore RD-M6100, 12-speed |
| Crankset | Shimano Deore FC-MT510-1, 30t |
| Bottom Bracket | Shimano MT501, BSA |
| Cassette | SunRace CSMZ800, 11-51t, 12-spd |
| Chain | KMC X12 NP/BK |
Brakes
| Brakes | Brake Calipers: Tektro HD-M275; Brake Levers: Tektro HD-M275; Rotors: Tektro 180/160, 6-Bolt |
|---|
Cockpit & Contact Points
| Headset | Cane Creek 15 |
|---|---|
| Handlebar | Salsa Rustler without logo |
| Stem | ProMax 31.8mm |
| Saddle | WTB Volt 142 |
| Seatpost | Promax 30.9mm |
Wheels & Tires
| Hubs | (F) Novatec 15x110mm, 32h, 6-bolt / (R) Novatec 12x148mm, 32h, 6-bolt |
|---|---|
| Rims | WTB I40 TCS |
| Spokes | 14G Black |
| Front Tire | Surly Dirt Wizard 29 x 3", 60tpi, Tubeless Ready |
| Rear Tire | Surly Dirt Wizard 29 x 3", 60tpi, Tubeless Ready |
| Wheel Size | 29" |
Geometry
Frame measurements by size.
Frame diagram
Select an available measurement to locate it on the frame.
All geometry measurements4 sizes · 16 measurements
| Measurement | Small | Medium | Large | X-Large |
|---|---|---|---|---|
| Seat tube | 368 mm | 419 mm | 470 mm | 521 mm |
| Effective top tube | 585 mm | 610 mm | 635 mm | 660 mm |
| Head tube | 90 mm | 100 mm | 110 mm | 120 mm |
| Head-tube angle | 69° | 69° | 69° | 69° |
| Seat-tube angle | 73° | 73° | 73° | 73° |
| Chainstay / rear center | 435 mm | 435 mm | 435 mm | 435 mm |
| Wheelbase | 1087 mm | 1113 mm | 1138 mm | 1164 mm |
| Bottom-bracket drop | 65 mm | 65 mm | 65 mm | 65 mm |
| Reach | 404 mm | 426 mm | 448 mm | 470 mm |
| Stack | 593 mm | 602 mm | 612 mm | 621 mm |
| Standover height | 770 mm | 797 mm | 825 mm | 853 mm |
| Fork offset / rake | 47 mm | 47 mm | 47 mm | 47 mm |
| Fork length / axle-to-crown | 483 mm | 483 mm | 483 mm | 483 mm |
| Crank length | 165 mm | 170 mm | 170 mm | 170 mm |
| Stem length | 70 mm | 70 mm | 70 mm | 80 mm |
| Handlebar width | 750 mm | 800 mm | 800 mm | 800 mm |
Dimensions as recorded.
Gearing
Lower gears help on climbs. Higher gears suit higher speeds.
RPM = pedal turns per minute.
How it works
Ratio = chainring teeth ÷ rear sprocket teeth. A 400% range means the highest ratio is four times the lowest.
Speeds are estimates from tire size and pedal cadence. Actual speeds vary.
Bike-specific inspection checklist 20 checks based on 5 archived component groups Open checklistClose checklist
This checklist uses the archived equipment for this bike. It cannot confirm the condition, service history or later component changes of the example in front of you.
Identity and fit
Follow the full used-bike inspection order →Archived: Surly Krampus Rigid - First Loser · Mountain · Published sizes: S, M, L, XL
Frame and fork
Inspect the frame and fork →Archived: Frame: Surly Krampus - 100% Surly Chromoly Steel, Natch tubing, double-butted main triangle, trumpet flared tubes, TIG welded, E.D. coated · Fork: Surly Krampus - 100% Surly Chromoly Steel, Natch tubing, double-butted main triangle, trumpet flared tubes, TIG welded, E.D. coated · Steel
Drivetrain
Check drivetrain wear →Archived: Shifters: Shimano M6100 Deore · Rear derailleur: Shimano Deore RD-M6100, 12-speed · Crankset: Shimano Deore FC-MT510-1, 30t · Bottom bracket: Shimano MT501, BSA · Cassette: SunRace CSMZ800, 11-51t, 12-spd · Chain: KMC X12 NP/BK
Brakes
Inspect the brakes →Archived: Brakes: Brake Calipers: Tektro HD-M275; Brake Levers: Tektro HD-M275; Rotors: Tektro 180/160, 6-Bolt
Wheels and tires
Check wheels and tires →Archived: Wheel size: 29" · Rims: WTB i40 TCS · Hubs: (F) Novatec 15x110mm, 32h, 6-bolt / (R) Novatec 12x148mm, 32h, 6-bolt · Front tire: Surly Dirt Wizard 29 x 3", 60tpi, Tubeless Ready · Rear tire: Surly Dirt Wizard 29 x 3", 60tpi, Tubeless Ready
Controls and contact points
Archived: Headset: Cane Creek 15 · Handlebar: Salsa Rustler without logo · Stem: ProMax 31.8mm · Seatpost: Promax 30.9mm · Saddle: WTB Volt 142
Before and during the test ride
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Gallery8 images
Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.



