MotoXSports The Garage

Trail & family

Honda CRF50F

Trail & family, 49cc 4T, 2025

Partly verified

Gearing

0 of 5 filled

Stock front sprocket
Not yet verified
Stock rear sprocket
Not yet verified
Chain pitch
Not yet verified
Stock chain links
Not yet verified
Stock final drive ratio
Not yet verified

Wheels and tires

2 of 4 filled

Front rim
Not yet verified
Rear rim
Not yet verified
Front tire
2.50-10 33J
Owner's manual p. 134, checked 2026-09-26 (source 1)
Rear tire
2.50-10 33J
Owner's manual p. 134, checked 2026-09-26 (source 1)

Suspension

2 of 7 filled

Fork
Not yet verified
Fork travel
87 mm (3.4 in)
Owner's manual p. 134, checked 2026-09-26 (source 1)
Shock travel
70 mm (2.8 in)
Owner's manual p. 134, checked 2026-09-26 (source 1)
Stock fork spring rate
Not yet verified
Stock shock spring rate
Not yet verified
Static sag, bike only
Not yet verified
Race sag, rider on
Not yet verified

Fluids and capacities

3 of 5 filled

Engine oil spec
SAE 10W-30, JASO T 903 MA
Owner's manual p. 132, checked 2026-09-26 (source 1)
Engine oil capacity
600 ml (20.3 fl oz)
Owner's manual p. 131, checked 2026-09-26 (source 1)
Coolant capacity
Not yet verified
Premix ratio
Not yet verified
Fuel capacity
2.6 L (0.69 gal)
Owner's manual p. 131, checked 2026-09-26 (source 1)

Maintenance

3 of 3 filled

Tire pressure (off-road)
15 psi (100 kPa) front, 18 psi (125 kPa) rear
Owner's manual p. 134, checked 2026-09-26 (source 1)
Chain slack
15-25 mm (9/16-1 in)
Owner's manual p. 134, checked 2026-09-26 (source 1)
Spark plug and gap
NGK CR6HSA or DENSO U20FSR-U, gap 0.6-0.7 mm
Owner's manual p. 133, checked 2026-09-26 (source 1)

Dimensions

1 of 3 filled

Seat height
Not yet verified
Wheelbase
910 mm (35.8 in)
Owner's manual p. 131, checked 2026-09-26 (source 1)
Weight
Not yet verified
Solid marks are owner's-manual pages; hollow marks are manufacturer web or spec-sheet figures still waiting on a manual page. Last reviewed 2026-09-26. Rows marked not yet verified are blank on purpose.

What's missing

11 of 25 fields read off a manual page.

Not yet verified (14): front sprocket, rear sprocket, chain pitch, chain links, front rim, rear rim, fork, fork spring rate, shock spring rate, static sag, race sag, coolant capacity, seat height, weight.

See coverage for every bike

Tools for this bike

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Buying parts

The stock sizes and specs this bike left the factory with, each with its source. Take them to any shop. Retailer links will appear here once a store approves MotoXSports.

Tires
Front tire 2.50-10 33J Owner's manual p. 134Rear tire 2.50-10 33J Owner's manual p. 134
Engine oil
Engine oil spec SAE 10W-30, JASO T 903 MA Owner's manual p. 132Engine oil capacity 600 ml (20.3 fl oz) Owner's manual p. 131

7 part specs not yet verified; see data coverage.

Gearing tool

The calculator prefills from this bike once its stock sprockets are verified. It works with any numbers in the meantime.

Open the gearing calculator

Sources

  1. 1
    Honda 2025 CRF50F Owner's Manual (31GJGA70); owner-supplied copy of Honda's PDF, pp. 131, 132, 133, 134Manual page, verified. Covers front tire, rear tire, fork travel, shock travel, engine oil spec, engine oil capacity, fuel capacity, tire pressure (off-road), chain slack, spark plug and gap, wheelbase; checked 2026-09-26.

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

My settings

Date / track
Sprockets run
Race sag / free sag
Fork air pressure or spring
Fork clickers (compression / rebound)
Shock clickers (low / high / rebound)
Tire pressures (front / rear)
Notes
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