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2025 Stevens

Tonga

A 27.5″ aluminum frame hardtail crosscountry bike with modest components.

Manufacturer Price

€749($871)
Weight31.5 lbs  
FrameAluminum
SuspensionHardtail, 100mm
ForkSuntour XCM
Wheels27.5″ Aluminum
Drivetrain2 × 9
GroupsetAltus, Acera
BrakesTektro Hydraulic Disc
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Insights
Ride Feel

Based on frame geometry and build specs.

Terrain
easyextreme
Handling
nimblestable
Tonga
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)

27 mph

Tonga

27 mph

Similar Bikes

Highest gear

(descending)

Spec Level

Based on build material and quality level of the frame, fork, wheelset, groupset, suspension system, and more.

Geometry
Specs
Build
Frame

Aluminium 6061, O.L.D.: 135 mm, Brake: IS disc, BB: BSA 73 mm, Front derailleur mount: clamp, Cable routing: external, Rack mounts

BB StandardBSA, 73mm, Threaded

ColorsPurple Papaya; Stealth Black

Fork

SR Suntour XCM DS, Travel: 100 mm, Coil spring, Steerer 1 1/8", O.L.D.: 100 mm, Brake: postmount disc 6"

Travel100mm

Spring TypeCoil

Bottom Bracket

BSA, 73mm, threaded

Headset

STEVENS MTB 1 1/8", Upper bearing cup: ZS44/28.6, Lower bearing cup: ZS44/30

Stem

Oxygen Driver, Handlebar clamp: 31.8 mm, Angle: 6°

Handlebar

Oxygen Driver, Width: 740 mm, Backsweep: 9°, Rise: 25 mm, Clamp: 31.8 mm

Saddle

Oxygen Raceline

Seatpost

Oxygen Driver, Length: 350 mm, Diameter: 27.2 mm, Insertion depth: min. 100 mm

TypeRigid

Pedals

ATB Pro Reflex

Groupset
Rear Derailleur

Sunrace RDM91, 8/9-speed, Total capacity: 40 T

Front Derailleur

Shimano Altus, FD-M2020-TS, 2-speed

Crank

27.5": Shimano FC-MT210-2 | 29": Oxygen Scorpo, 36-22 T, BB type: BSA 73 mm / 2-Piece

Shifters

Shimano Acera, SL-M3010, 2-speed

Cassette

SunRace CSM98, 9-speed, Combination: 11-13-15-18-21-24-28-32-36 T

Chain

Shimano CN-HG53

Brakes

Tektro HD-T275, Hydraulic disc brake

TypeTektro Hydraulic Disc

Brake Levers

Tektro HD-T275, 3 finger

Wheels
Rims

Oxygen RM-M19, ETRTO: 19 x 584

Front Hub

Shimano HB-TX505, Axle: QR9x100 mm

Rear Hub

Shimano FH-TX505-8, Axle: QR10x135 mm

Tires

Schwalbe Smart Sam Active-Line, Tire size: 27.5": 57-584 | 29": 57-622, SBC compound, KevlarGuard

Rider Notes
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First added October 28

Last updated October 25

Not listed for 216 days