The Garage

Motocross

Stock-size parts in stock at MotoSport

Kawasaki KX65 2025

Motocross, 64cc 2T, US version

Partly verified

From the owner’s manual: premix 32:1, p. 12; coolant 0.4 L (0.42 US qt), p. 41; front tire 60/100-14 30M, p. 14; rear tire 80/100-12 41M, p. 14. Checked 16 Oct 2026.

No CPSC recall found for the 2025 Kawasaki KX65, checked 2026-10-15. Recalls

Kawasaki KX65 2025

Workshop card from motoxsports.com/bikes/kawasaki-kx65-2025/ · each figure as the maker’s document prints it, with its source number; ≈ marks a figure we converted. Torque values are not published: use the manual.

Gearing

3 of 5 filled

Stock front sprocket
13T
Verified, read off the manual page: Manual p. 13 · checked 2026-10-14 source [1]
Stock rear sprocket
47T
Verified, read off the manual page: Manual p. 13 · checked 2026-10-14 source [1]
Chain pitch
Not yet verified
Stock chain links
Not yet verified
Stock final drive ratio
3.615 : 1
Verified, read off the manual page: Manual p. 13 · checked 2026-10-14 source [1]

Wheels and tires

4 of 4 filled

Front rim
14 x 1.40
Verified, read off the manual page: Manual p. 14 · checked 2026-10-14 source [1]
Rear rim
12 x 1.60
Verified, read off the manual page: Manual p. 14 · checked 2026-10-14 source [1]
Front tire
60/100-14 30M
Verified, read off the manual page: Manual p. 14 · checked 2026-10-14 source [1]
Rear tire
80/100-12 41M
Verified, read off the manual page: Manual p. 14 · checked 2026-10-14 source [1]

Suspension

3 of 7 filled

Fork
Telescopic fork
Verified, read off the manual page: Manual p. 14 · checked 2026-10-14 source [1]
Fork travel
210 mm (8.27 in.)
Verified, read off the manual page: Manual p. 14 · checked 2026-10-14 source [1]
Shock travel
240 mm (9.45 in.)
Verified, read off the manual page: Manual p. 14 · checked 2026-10-14 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 3 filled

Coolant capacity
0.4 L (0.42 US qt)
Verified, read off the manual page: Manual p. 41 · checked 2026-10-14 source [1]
Premix ratio
32:1
Verified, read off the manual page: Manual p. 12 · checked 2026-10-14 source [1]
Fuel capacity
3.8 L (1.0 US gal)
Verified, read off the manual page: Manual p. 12 · checked 2026-10-14 source [1]

Service specs

5 of 6 filled

Gearbox oil
Transmission Oil: Capacity 0.5 L (0.53 US qt); Type API SG, SH, SJ, SL or SM with JASO MA, MA1 or MA2; SAE 10W-40
Verified, read off the manual page: Manual p. 13 · checked 2026-10-16 source [1]
Fork oil
Type Kawasaki Fork Oil SS8; Amount (per fork leg) 249.5 – 254.5 mL (8.44 – 8.60 US oz); Level (fork compressed, spring removed) 132 mm (5.2 in.)
Verified, read off the manual page: Manual p. 14 · checked 2026-10-16 source [1]
Brake fluid
Front brake fluid : DOT 3 or DOT 4; Rear brake fluid : DOT 4
Verified, read off the manual page: Manual p. 84 · checked 2026-10-16 source [1]
Coolant type
Permanent type of antifreeze (ethylene glycol base plus corrosion and rust inhibitors for aluminum engines and radiators); Water and Antifreeze Mixing Ratio 1 : 1 (water : antifreeze)
Verified, read off the manual page: Manual p. 41 · checked 2026-10-16 source [1]
Fuel octane
Antiknock Index 90
Verified, read off the manual page: Manual p. 22 · checked 2026-10-16 source [1]
Idle speed
Not yet verified

Maintenance

3 of 3 filled

Tire pressure (off-road)
80 kPa (0.8 kgf/cm², 11 psi) – 100 kPa (1.0 kgf/cm², 14 psi)
Verified, read off the manual page: Manual p. 97 · checked 2026-10-14 source [1]
Chain slack
45 – 55 mm (1.8 – 2.2 in.)
Verified, read off the manual page: Manual p. 76 · checked 2026-10-14 source [1]
Spark plug and gap
NGK BR10EG
Verified, read off the manual page: Manual p. 13 · checked 2026-10-14 source [1]

Dimensions

2 of 3 filled

Seat height
Not yet verified
Wheelbase
1 120 mm (44.1 in.)
Verified, read off the manual page: Manual p. 12 · checked 2026-10-14 source [1]
Weight (curb Mass)
60 kg (132.3 lb)
Verified, read off the manual page: Manual p. 12 · checked 2026-10-14 source [1]
Solid marks are owner's-manual pages; hollow marks are manufacturer web or spec-sheet figures still waiting on a manual page. Last reviewed 2026-10-16. 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.

Sprockets
Stock front sprocket 13T Owner's manual p. 13Stock rear sprocket 47T Owner's manual p. 1313T front sprockets at MotoSport47T rear sprockets at MotoSport
Tires
Front tire 60/100-14 30M Owner's manual p. 14Rear tire 80/100-12 41M Owner's manual p. 14Front tires 60/100-14 at MotoSportTubes 60/100-14 at MotoSportRear tires 80/100-12 at MotoSportTubes 80/100-12 at MotoSport
Coolant
Coolant capacity 400 ml (13.5 fl oz) Owner's manual p. 41Coolant at MotoSport

In stock at MotoSport

Prices from MotoSport’s catalog of Oct 14, 2026; check today’s price before you buy.

Front tire, stock size 60/100-14

Rear tire, stock size 80/100-12

Spark plug, stock NGK BR10EG

Prices and stock from MotoSport's product catalog on Oct 14, 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.

4 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: Kawasaki KX65 2026.

Other model years

All 3 model years, 2024 to 2026, side by side

Riding

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

Gearing calculator

Gearing for this bike

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

Pick a bike to fill both setups with its stock sprockets.

Front sprockets 8–16 teeth, rear 34–60. Values outside that range are brought back to the nearest limit.

Setup A — what you run now
Setup B — what you are thinking about
Final drive ratio

— — : 1

—
Pull at the wheel—
Top speed—
Ratio change—
A —
B —
Taller · more speed Shorter · more pull

—

Changing the rear sprocket changes the chain length too. The chain length calculator works it out from the chain you have now, with where the axle ends up.

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

What's missing

22 of 30 fields read off a manual page.

Not yet verified (8): chain pitch, chain links, fork spring rate, shock spring rate, static sag, race sag, seat height, idle speed.

See coverage for every bike

Sources

  1. 1
    Kawasaki Owner's Manual, OWNER'S MANUAL, KX65C (2025), item 99814-0012 (© 2024 Kawasaki Motors, Ltd., Feb. 15, 2024 (1)); Kawasaki e-book on pws.ktivs.net, opened from the kawasaki.com owner portal; no model year printed, Kawasaki's own owner's manual portal lists it for model year 2025 (owner decision 2026-10-12)pp. 12, 13, 14, 22, 41, 76, 84, 97Manual page, verified. Covers stock front sprocket, stock rear sprocket, stock final drive ratio, front tire, rear tire, front rim, rear rim, fork, fork travel, shock travel, coolant capacity, fuel capacity, premix ratio, tire pressure (off-road), spark plug and gap, chain slack, wheelbase, weight (curb Mass), weight, as labelled, gearbox oil, fork oil, brake fluid, coolant type, fuel octane; checked 2026-10-16.

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
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