Lowest1.36:1
Highest2.71:1
Total range200%
Estimated speed At 90 RPM
Lowest gear
Highest gear
Uses front tire 24×2.125; rear size isn’t listed.
Velopedia Bicycle Archive
2011 Jamis 275
Original specifications: Juvenile Mix drivetrain · 24" wheels · 26.75 lbs published weight.
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At a glance
Archive #23815- Model year
- 2011
- Category
- Kids
- Original MSRP
- $325.00
- Sizes
- 10"
- Colors
- Lavender pearl
- Weight
- 26.75 lbs
- In this record
- 26 specifications · archived image · original MSRP
Original buildLightweigth 6061 Aluminum · Juvenile Mix · 24" wheels
Frameset
| Frame Construction | Aluminum |
|---|---|
| Frame Material | Lightweigth 6061 Aluminum |
| Fork | Comfort unicrown |
| Fork Material | Unicrown |
Drivetrain
| Component Group | Juvenile Mix |
|---|---|
| Shifters | Shimano RevoShift |
| Rear Derailleur | Shimano TX31 |
| Crankset | Forged Alloy, 38T teeth |
| Bottom Bracket | Cotterless Type 3SB axle, 124.5mm spindle |
| BB Shell Width | 68mm |
| Cassette | Indexed freewheel |
| Rear Cogs | 6-speed, 14 - 28 teeth |
| Chain | KMC HP20 |
| Pedals | Comfort Style |
Brakes
| Brakes | Alloy Linear Pull brakes, alloy short reach levers |
|---|
Cockpit & Contact Points
| Headset | 1 1/8" Standard threaded type |
|---|---|
| Handlebar | Comfort riser |
| Handlebar Extensions | Not included |
| Stem | Hi-rise Comfort Quill-type |
| Saddle | Jamis Youth Comfort |
| Seatpost | Pillar, 27.2mm diameter |
Wheels & Tires
| Hubs | Nutted |
|---|---|
| Rims | Alloy, 36-hole |
| Spokes | Nickel-plated, 14ga. (2.0mm) |
| Front Tire | 24 x 2.125" Brooklyn Speedway |
| Wheel Size | 24" wheels |
No specifications match. Try a component name or clear your search.
Gearing
Lower gears help on climbs. Higher gears suit higher speeds.
RPM
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
Pillar
27.2mm diameter
Retailer offers
Race Face Ride XC Seatpost Black, 27.2x375mm
Replacement option
24 x 2.125" Brooklyn Speedway
Replacement search: 24x2.125 bicycle tire Before ordering: Check rim type and tire clearance.
Alloy Linear Pull brakes
alloy short reach levers
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.
Parts and service referenceQuick reference before buying parts
Archived specifications for reference. Check the fitted parts before ordering.
- Front tire
- 24 x 2.125" Brooklyn Speedway
- Drivetrain
- 6-speed
- Seatpost diameter
- 27.2 mm
- Bottom bracket / shell
- Cotterless Type 3SB axle, 124.5mm spindle · 68mm
Equipment inspection checks 10 checks based on 5 archived component groups Open equipment checksClose equipment checks
Checks selected from the archived equipment. Confirm what is fitted today. This is not a complete safety inspection; use the full inspection guide before test riding.
Full used-bike inspection guide →
Frame and fork
Inspect the frame and fork →Archived: Frame: Aluminum · Fork: Comfort unicrown · Unicrown
Drivetrain
Check drivetrain wear →Archived: Group: Juvenile Mix · Shifters: Shimano RevoShift · Rear derailleur: Shimano TX31 · Crankset: Forged Alloy, 38T teeth · Bottom bracket: Cotterless Type 3SB axle, 124.5mm spindle · Cassette: Indexed freewheel · Rear cogs: 6-speed, 14 - 28 teeth · Chain: KMC HP20
Brakes
Inspect the brakes →Archived: Brakes: Alloy Linear Pull brakes, alloy short reach levers
Wheels and tires
Check wheels and tires →Archived: Wheel size: 24" wheels · Rims: Alloy, 36-hole · Hubs: Nutted · Front tire: 24 x 2.125" Brooklyn Speedway
Controls and contact points
Archived: Headset: 1 1/8" Standard threaded type · Handlebar: Comfort riser · Stem: Hi-rise Comfort Quill-type · Seatpost: Pillar, 27.2mm diameter · Saddle: Jamis Youth Comfort · Pedals: Comfort Style
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Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.