Rear tire: 27.5×4.5.
Velopedia Bicycle Archive
2021 Rocky Mountain Blizzard 50 (27.5)
Original specifications: 27.5" wheels · geometry for 4 published sizes.
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At a glance
Archive #900004758- Model year
- 2021
- Category
- Mountain
- Original MSRP
- $2,819.00
- Sizes
- S, M, L, XL
- Colors
- Purple/Black
- Geometry
- 4 manufacturer sizes
- In this record
- 22 specifications · archived image · original MSRP · geometry
Original buildAluminum · 27.5"
Frameset
| Frame Construction | Rocky Mountain 6061 SL Series Alloy. 100mm BSA BB. Zero Stack Tapered Headtube. Internal Cable Routing. mm Dropper Post Compatible. 197mm Dropouts 0 Rear Triangle |
|---|---|
| Frame Material | Aluminum |
| Fork | Rocky Mountain Carbon Fat |
| Fork Material | Carbon Fiber |
Drivetrain
| Shifters | Shimano XT |
|---|---|
| Rear Derailleur | Shimano XT |
| Crankset | Race Face Aeffect Cinch 30T |
| Bottom Bracket | Race Face BSA 100 24mm |
| Cassette | Shimano SLX 10-51T |
| Chain | Shimano M6100 |
Brakes
| Brakes | Shimano MT4120 4 Piston |
|---|
Cockpit & Contact Points
| Headset | FSA Orbit NO.57E |
|---|---|
| Handlebar | Rocky Mountain AM 780mm |
| Stem | Rocky Mountain 31.8 AM | All Sizes = 40mm |
| Saddle | WTB Volt Race 142 |
| Seatpost | Race Face Aeffect R Dropper 30.9mm | XS - SM = 125mm | MD = 150mm | LG - XL - XXL = 175mm |
Wheels & Tires
| Hubs | Front: Rocky Mountain Sealed 150 x 15mm; Rear: DT Swiss 350 197mm |
|---|---|
| Rims | Sun Mulefüt 80 / Tubeless Ready - Tape / Valves Incl |
| Spokes | 2.0 Stainless |
| Front Tire | Terrene Cake Eater Fast Rolling Tubeless Studdable 27.5 x 4.5 |
| Rear Tire | Terrene Cake Eater Fast Rolling Tubeless Studdable 27.5 x 4.5 |
| Wheel Size | 27.5" |
No specifications match. Try a component name or clear your search.
Geometry
Frame measurements by size.
Frame diagram
Select an available measurement to locate it on the frame.
All geometry measurements4 sizes · 12 measurements
| Measurement | SM · 27.5″ | MD · 27.5″ | LG · 27.5″ | XL · 27.5″ |
|---|---|---|---|---|
| Seat tube | 380 mm | 420 mm | 445 mm | 480 mm |
| Effective top tube | 607 mm | 634 mm | 661 mm | 689 mm |
| Head tube | 95 mm | 100 mm | 110 mm | 120 mm |
| Head-tube angle | 66° | 66° | 66° | 66° |
| Seat-tube angle | 73.5° | 73.5° | 73.5° | 73.5° |
| Chainstay / rear center | 455 mm | 455 mm | 455 mm | 455 mm |
| Wheelbase | 1179 mm | 1206 mm | 1235 mm | 1264 mm |
| Bottom-bracket drop | 60 mm | 60 mm | 60 mm | 60 mm |
| Reach | 425 mm | 450 mm | 475 mm | 500 mm |
| Stack | 615 mm | 619 mm | 629 mm | 638 mm |
| Standover height | 786 mm | 803 mm | 814 mm | 825 mm |
| Wheel size | 27.5 | 27.5 | 27.5 | 27.5 |
Dimensions as recorded.
Gearing
Lower gears help on climbs. Higher gears suit higher speeds.
RPM = pedal turns per minute.
How it works
Ratio = front teeth ÷ rear teeth. Hub gears also include the hub’s internal ratio. A 400% range means the highest ratio is four times the lowest.
Speeds are estimates from tire size and pedal cadence. Actual speeds vary.
Try your current gearingChanged tires or gears? Calculate your setup.
Your changes apply to this calculation. The archived build stays unchanged.
Gearing results
| Measure | Original | Your setup |
|---|---|---|
| Lowest ratio | — | — |
| Highest ratio | — | — |
| Total range | — | — |
| Lowest-gear speed | — | — |
| Highest-gear speed | — | — |
Speeds are estimates. These calculations do not establish component compatibility or available tire clearance.
Parts & serviceability
Find replacement parts

Shimano Deore CN-M6100 Chain Silver, 12 Speed, 126 Links
Model match
More parts (5)Fewer parts
Based on the original build. Check fit and installed parts before ordering. Affiliate links may earn Velopedia a commission. As an Amazon Associate I earn from qualifying purchases.
Service essentialsQuick reference before buying parts
Archived specifications for reference. Check the fitted parts before ordering.
- Bottom bracket / shell
- Race Face BSA 100 24mmCheck: Verify shell type and width, crank interface, and spindle length or spacers.
Not confirmed in this record: Front tire · Rear tire · Drivetrain · Seatpost diameter. Check the fitted parts for these details.
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: 2021 Rocky Mountain Blizzard 50 (27.5) · Mountain · Published sizes: S, M, L, XL
Frame and fork
Inspect the frame and fork →Archived: Frame: Rocky Mountain 6061 SL Series Alloy. 100mm BSA BB. Zero Stack Tapered Headtube. Internal Cable Routing. mm Dropper Post Compatible. 197mm Dropouts 0 Rear Triangle · Fork: Rocky Mountain Carbon Fat · Carbon Fiber
Drivetrain
Check drivetrain wear →Archived: Shifters: Shimano XT · Rear derailleur: Shimano XT · Crankset: Race Face Aeffect Cinch 30T · Bottom bracket: Race Face BSA 100 24mm · Cassette: Shimano SLX 10-51T · Chain: Shimano M6100
Brakes
Inspect the brakes →Archived: Brakes: Shimano MT4120 4 Piston
Wheels and tires
Check wheels and tires →Archived: Wheel size: 27.5" · Rims: Sun Mulefüt 80 / Tubeless Ready - Tape / Valves Incl · Hubs: Front: Rocky Mountain Sealed 150 x 15mm; Rear: DT Swiss 350 197mm
Controls and contact points
Archived: Headset: FSA Orbit NO.57E · Handlebar: Rocky Mountain AM 780mm · Stem: Rocky Mountain 31.8 AM | All Sizes = 40mm · Seatpost: Race Face Aeffect R Dropper 30.9mm | XS - SM = 125mm | MD = 150mm | LG - XL - XXL = 175mm · Saddle: WTB Volt Race 142
Before and during the test ride
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Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.
