motocross · 249cc 4T · 2025+

Honda CRF250R

Verified

Stock figures below, each transcribed from a manual or manufacturer spec sheet. Anything still unverified says so.

Last reviewed 2026-09-22

Gearing · 4 of 5 verified
Stock front sprocket	13T
Stock rear sprocket	50T
Chain pitch	520
Stock chain links	not verified
Stock final drive ratio	3.85 : 1

Wheels and tires · 2 of 4 verified
Front rim	not verified
Rear rim	not verified
Front tire	80/100-21
Rear tire	100/90-19

Suspension · 3 of 5 verified
Fork	49mm inverted Showa fork
Fork travel	305 mm (12.0 in)
Shock travel	307 mm (12.1 in)
Stock fork spring rate	not verified
Stock shock spring rate	not verified

Fluids and capacities · 0 of 4 verified
Engine oil spec	not verified
Engine oil capacity	not verified
Coolant capacity	not verified
Fuel capacity	not verified

Dimensions · 2 of 3 verified
Seat height	955 mm (37.6 in)
Wheelbase	1483 mm (58.4 in)
Weight	not verified

Garage tool 01

Sprocket calculator

Put your current gearing in Setup A and the setup you are considering in Setup B. Everything updates as you type.

Setup A — what you run now

Front teeth

Rear teeth

Setup B — what you are thinking about

Front teeth

Rear teeth

Final drive ratio

— — : 1

—

Pull at the wheel—

Top speed—

Chain (est.)—

A —

B —

Taller · more speed Shorter · more pull

—

Ratios are exact. The chain figure is an estimate of roughly one link per two teeth of change — confirm against your manual before ordering.

Sources

gearing.front_teeth — Honda Powersports, 2025 CRF250R specification sheet (final drive 13T/50T), checked 2026-09-22
gearing.rear_teeth — Honda Powersports, 2025 CRF250R specification sheet (final drive 13T/50T), checked 2026-09-22
gearing.chain_pitch — Honda Powersports, 2025 CRF250R specification sheet (#520 chain), checked 2026-09-22
wheels.front_tire — Honda Powersports, 2025 CRF250R specification sheet, checked 2026-09-22
wheels.rear_tire — Honda Powersports, 2025 CRF250R specification sheet, checked 2026-09-22
suspension.fork_type — Honda Powersports, 2025 CRF250R specification sheet, checked 2026-09-22
suspension.fork_travel_mm — Honda lists 12.0 in front travel; converted to mm, checked 2026-09-22
suspension.shock_travel_mm — Honda lists 12.1 in rear travel; converted to mm, checked 2026-09-22
dimensions.seat_height_mm — Honda lists 37.6 in seat height; converted to mm, checked 2026-09-22
dimensions.wheelbase_mm — Honda lists 58.4 in wheelbase; converted to mm, checked 2026-09-22

Always confirm against the manual for your exact year before ordering parts or setting up suspension. Torque specs are deliberately not published here.

All bikes