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2021 On-One

Bootzipper 650b SRAM SX

A 27.5″ steel frame rigid crosscountry bike with upper mid-range components.
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Manufacturer Price

£899($1,210)
Weight29.5 lbs  
FrameSteel
SuspensionRigid
Wheels27.5″ Aluminum
Drivetrain1 × 12
GroupsetSX Eagle
BrakesSRAM Level Hydraulic Disc
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Insights
Ride Feel

Based on frame geometry and build specs.

Terrain
easyextreme
Handling
nimblestable
Bootzipper 650b SRAM SX
Other Crosscountry bikes
Gearing

A bike with lower gearing will be easier to ride up steep hills, while a higher top end means it will pedal faster down hills.

Lowest gear

(climbing)

24 mph

Bootzipper 650b SRAM SX

27 mph

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Highest gear

(descending)

Sizing
SM

5'2" – 5'8"

MD

5'6" – 5'11"

LG

5'10" – 6'3"

XL

6'1" – 6'7"

🐐 Estimated

Rider Fit Notes

None yet.

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Geometry
Specs
Build
Frame

4130

BB StandardBSA, 73mm, Threaded

Tire Clearance2.35"

Fork

405mm AC 47mm Rake

Bottom Bracket

SRAM DUB BSA Bottom Bracket / 73mm BSA 73mm Shell

Stem

On-One Hot Box V2 Stem / 60mm / 7 Degree / 31.8mm

Handlebar

On-One OG V2 Handlebar / Black

Saddle

San Marco Monza Start Saddle / Black / Carbon Steel

Seatpost

On-One Twelfty V2 6061 Alloy Seatpost / 31.6mm / 400mm / Black

TypeRigid

Grips

On-One Knurl Grip / Black

Groupset
Rear Derailleur

SRAM SX Eagle Rear Mech / 12 Speed

Crank

SRAM SX Eagle DUB Crankset / 170mm / 32 Tooth / Non BOOST

Cassette

SRAM PG-1210 Eagle 12 Speed Cassette / 11-50

Chain

KMC X12 12 Speed Chain / 126 / Silver/Black

Brakes

SRAM Level Hydraulic Disc Brake / Rear / 1600mm / 20 Post to IS

TypeSRAM Level Hydraulic Disc

Wheels
Rims

650b

Tires

Panaracer Comet Hardpack Wire Bead 27.5" Tyre / 2.0"

Rider Notes
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First added February 25

Last updated February 25

Not listed for 1,829 days