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2025 Centurion

Backfire Comp 50

A 27.5″ / 29″ aluminum frame hardtail crosscountry bike with modest components.
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Weight31.5 lbs  
FrameAluminum
SuspensionHardtail, 100mm
ForkSuntour XCT
Wheels27.5″ / 29″ Aluminum
Drivetrain2 × 8
GroupsetAcera
BrakesTektro Hydraulic Disc
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Insights
Ride Feel

Based on frame geometry and build specs.

Terrain
easyextreme
Handling
nimblestable
Backfire Comp 50
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)

28 mph

Backfire Comp 50

27 mph

Similar Bikes

Highest gear

(descending)

Geometry
Specs
Build
Frame

Backfire Comp, Material: Aluminium, Steuerrohr: 1 1/8" straight, Ausfallende: 10x135mm, Bremsaufnahme: IS/Postmount

Fork

SR SUNTOUR XCT ATB, Federweg: 100mm, pre load adjuster, 1 1/8" straight

Travel100mm

Spring TypeCoil

Bottom Bracket

FSA BB-7420ST, 73mm square type

Stem

PROCRAFT Comp II, Winkel: 7°, Länge: 60mm (XXS), 70mm (XS), 80mm (S), 90mm (M), 100mm (L)

Handlebar

PROCRAFT Riser Comp, Durchmesser: 31.8mm, Breite: 680mm (27.5"), 720mm (29"), Rise: 25mm

Saddle

PROCRAFT Sport

Seatpost

PROCRAFT Comp II, Durchmesser: 27.2mm, 27.5": Länge: 350mm, 29": Länge: 400mm

TypeRigid

Pedals

VP VPE-899

Groupset
Rear Derailleur

SHIMANO Acera, RD-M3020-8, 2x8

Front Derailleur

SHIMANO FD-M315 TS, Durchmesser: 34.9mm, top-swing

Crank

SHIMANO FC-M315-2 36-22T, Länge: 175mm (29"), 170mm (27.5")

Shifters

SHIMANO Acera, RD-M3020-8, 2x8

Cassette

SHIMANO HG31, 11-34T

Chain

KMC Z8.3

Brakes

TEKTRO HD-M275, organic pads

TypeTektro Hydraulic Disc

Brake Levers

TEKTRO HD-M275

Wheels
Rims

PROCRAFT JD 200, IW 20mm

Spokes

PROCRAFT stainless 2.0

Front Hub

SHIMANO HB-TX506 / SHIMANO FH-TX506, 9x100mm, 32H, 10x135mm, 32H

Rear Hub

SHIMANO HB-TX506 / SHIMANO FH-TX506, 9x100mm, 32H, 10x135mm, 32H

Tires

KENDA Small Block Eight 27.5/29x2.10"

Rider Notes
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First added October 19

Last updated March 21

Not listed for 69 days