
Shimano Deore 12 FC-M6100 Crankset Black, 175mm/30T
175mm/30T
Velopedia Bicycle Archive
Original specifications: 29" wheels · geometry for 4 published sizes.
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At a glance
| 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 | RockShox 35 Gold RL, 29", 15 x 110mm, 120mm Travel, 51mm offset |
| Shifters | Shimano Deore XT SL-M8100 |
|---|---|
| Rear Derailleur | Shimano Deore XT RD-M8100 |
| Crankset | Shimano Deore M6100 |
| Bottom Bracket | Shimano |
| Cassette | OE 12-spd, 11-51t |
| Chain | KMC X12 Anti-Rust |
| Brakes | Brake Calipers: Tektro Gemini HD-M520; Brake Levers: Tektro Gemini HD-M520; Rotors: Tektro 180/160, 6-Bolt |
|---|
| Headset | Cane Creek |
|---|---|
| Handlebar | Salsa Rustler 31.8 |
| Stem | ProMax 31.8mm |
| Saddle | WTB Volt |
| Seatpost | TranzX JD-YSP15, 30.9, 120mm travel |
| Hubs | (F) Novatec 15x110mm, 32h, 6-bolt / (R) Novatec 12x148mm, 32h, 6-bolt |
|---|---|
| Rims | WTB ST I30 TCS 2.0 |
| Spokes | 14G Black |
| Front Tire | Surly Dirt Wizard 29 x 2.6", 60tpi, Tubeless Ready |
| Rear Tire | Surly Dirt Wizard 29 x 2.6", 60tpi, Tubeless Ready |
| Wheel Size | 29" |
Frame measurements by size.
Published frame view
Select an available measurement to locate it on the frame.
| Measurement | Small | Medium | Large | X-Large |
|---|---|---|---|---|
| Seat tube | 368 mm | 419 mm | 470 mm | 521 mm |
| Effective top tube | 587 mm | 612 mm | 637 mm | 662 mm |
| Head tube | 90 mm | 100 mm | 110 mm | 120 mm |
| Head-tube angle | 68.4° | 68.4° | 68.4° | 68.4° |
| Seat-tube angle | 72.4° | 72.4° | 72.4° | 72.4° |
| Chainstay / rear center | 435 mm | 435 mm | 435 mm | 435 mm |
| Wheelbase | 1096 mm | 1121 mm | 1147 mm | 1173 mm |
| Bottom-bracket drop | 60 mm | 60 mm | 60 mm | 60 mm |
| Reach | 397 mm | 419 mm | 442 mm | 464 mm |
| Stack | 597 mm | 607 mm | 616 mm | 626 mm |
| Standover height | 776 mm | 803 mm | 832 mm | 861 mm |
| Fork offset / rake | 51 mm | 51 mm | 51 mm | 51 mm |
| Fork length / axle-to-crown | 498 mm | 498 mm | 498 mm | 498 mm |
| Crank length | 165 mm | 170 mm | 170 mm | 175 mm |
| Stem length | 70 mm | 70 mm | 70 mm | 80 mm |
| Handlebar width | 750 mm | 800 mm | 800 mm | 800 mm |
Measurements may vary by configuration, wheel size, or frame setting where noted in the published chart.
Parts & serviceability

175mm/30T

12-Speed.
Based on the original build. Confirm the model, size and fit before ordering; installed parts may differ. As an Amazon Associate I earn from qualifying purchases. Velopedia may also earn from qualifying eBay purchases. Velopedia may also earn from qualifying retailer purchases.
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.
Archived: Surly Krampus Front Suspension - Nose Drip Curry · Mountain · Published sizes: S, M, L, XL
Archived: Frame: Surly Krampus - 100% Surly Chromoly Steel, Natch tubing, double-butted main triangle, trumpet flared tubes, TIG welded, E.D. coated · Fork: RockShox 35 Gold RL, 29", 15 x 110mm, 120mm Travel, 51mm offset
Archived: Fork: RockShox 35 Gold RL, 29", 15 x 110mm, 120mm Travel, 51mm offset
Archived: Shifters: Shimano Deore XT SL-M8100 · Rear derailleur: Shimano Deore XT RD-M8100 · Crankset: Shimano Deore M6100 · Bottom bracket: Shimano · Cassette: OE 12-spd, 11-51t · Chain: KMC X12 Anti-Rust
Archived: Brakes: Brake Calipers: Tektro Gemini HD-M520; Brake Levers: Tektro Gemini HD-M520; Rotors: Tektro 180/160, 6-Bolt
Archived: Wheel size: 29" · Rims: WTB ST i30 TCS 2.0 · Hubs: (F) Novatec 15x110mm, 32h, 6-bolt / (R) Novatec 12x148mm, 32h, 6-bolt · Front tire: Surly Dirt Wizard 29 x 2.6", 60tpi, Tubeless Ready · Rear tire: Surly Dirt Wizard 29 x 2.6", 60tpi, Tubeless Ready
Archived: Headset: Cane Creek · Handlebar: Salsa Rustler 31.8 · Stem: ProMax 31.8mm · Seatpost: TranzX JD-YSP15, 30.9, 120mm travel · Saddle: WTB Volt
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Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.