The Garage

Trail & family

Stock-size parts in stock at MotoSport

Honda CRF50F 2025

Trail & family, 49cc 4T

Partly verified

From the owner’s manual: engine oil capacity 600 ml (20.3 fl oz), p. 131; front tire 2.50-10 33J, p. 134; rear tire 2.50-10 33J, p. 134. Checked 26 Sep 2026.

No CPSC recall found for the 2025 Honda CRF50F, checked 2026-10-15. Recalls

Spec card PDF

Wheels and tires

2 of 4 filled

Front rim
Not yet verified
Rear rim
Not yet verified
Front tire
2.50-10 33J
Verified, read off the manual page: Manual p. 134 · checked 2026-09-26 source [1]
Rear tire
2.50-10 33J
Verified, read off the manual page: 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, converted by MotoXSports)
Verified, read off the manual page: Manual p. 134 · checked 2026-09-26 source [1]
Shock travel
70 mm (≈ 2.8 in, converted by MotoXSports)
Verified, read off the manual page: 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 4 filled

Engine oil spec
SAE 10W-30, JASO T 903 MA
Verified, read off the manual page: Manual p. 132 · checked 2026-09-26 source [1]
Engine oil capacity
600 ml (≈ 20.3 fl oz, converted by MotoXSports)
Verified, read off the manual page: Manual p. 131 · checked 2026-09-26 source [1]
Coolant capacity
Not yet verified
Fuel capacity
2.6 L (≈ 0.69 gal, converted by MotoXSports)
Verified, read off the manual page: 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
Verified, read off the manual page: Manual p. 134 · checked 2026-09-26 source [1]
Chain slack
15-25 mm (9/16-1 in)
Verified, read off the manual page: 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
Verified, read off the manual page: 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, converted by MotoXSports)
Verified, read off the manual page: Manual p. 131 · checked 2026-09-26 source [1]
Weight
Not yet verified

Gearing

0 of 5 filled

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

Service specs

0 of 6 filled

Fork oil, brake fluid, coolant type, fuel octane, idle speed, valve clearance
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.

Buying parts

The stock sizes and specs this bike left the factory with, each with its source. Take them to any shop.

Retailer links below are affiliate links: we may earn a commission, at no cost to you, and it never changes the specs. Affiliate disclosure.

Tires
Front tire 2.50-10 33J Owner's manual p. 134Rear tire 2.50-10 33J Owner's manual p. 134Front tires 2.50-10 at MotoSportTubes 2.50-10 at MotoSportTires 2.50-10 at MotoSport
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. 131Engine oil at MotoSport

In stock at MotoSport

Prices from MotoSport’s catalog of Oct 26, 2026; check today’s price before you buy.

Front tire, stock size 2.50-10

Rear tire, stock size 2.50-10

Engine oil, stock viscosity 10W-30

Matched on viscosity only. The manual prints: SAE 10W-30, JASO T 903 MA. Check the label for the rest.

Prices and stock from MotoSport's product catalog on Oct 26, 2026; they change, so check the price at MotoSport before you buy. Products are chosen by exact stock size, code or oil viscosity from the specs above, known brands first, then price. We have not tested them.

7 part specs not yet verified; see data coverage.

Tools for this bike

Compare with

Comparisons with other bikes use the newest model year on file: Honda CRF50F 2026.

Other model years

All 4 model years, 2023 to 2026, side by side

Riding

Where kids can ride: tracks and areas whose own pages mention young riders.

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

What's missing

11 of 31 fields read off a manual page.

Not yet verified (20): 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, fork oil, brake fluid, coolant type, fuel octane, idle speed, valve clearance.

See coverage for every bike

Sources

  1. 1
    Honda 2025 CRF50F Owner's Manual (31GJGA70); owner-supplied copy of Honda's PDFpp. 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.

Your manual prints something different? Report a value with the page it is on; every fix is listed in the corrections log.

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
All bikes