Honda CRF50F 2005
Trail
49cc
Displacement
110lb
Curb weight
21.6in
Seat height
3.8in
Front travel
3spd
Gearbox
2005 Honda CRF50F overview
- Street—
- TrailTrail
- Woods—
- Rocks—
- Desert—
- Track—
The 2005 Honda CRF50F is Honda's smallest dirt bike, a trail bike for young children learning to ride. It has an air-cooled 49cc four-stroke single with an overhead-cam head and a carburetor, a kickstarter, and a three-speed gearbox with an automatic clutch, so there is no clutch lever. The frame carries a telescopic fork with 3.8 in of travel, 2.8 in of rear travel, and drum brakes front and rear, on 10-inch wheels. The seat is 21.6 in high, it weighs 110 lb ready to ride, and a throttle limiter lets a parent cap its speed.
Who it's for
Young children on their first motorcycle: the seat is just 21.6 in high, the automatic clutch means there is no clutch lever to learn, and the adjustable throttle limiter lets a parent cap the speed while a new rider learns. Honda's weight limit is 88 lb (40 kg), including the rider and any accessories. It is for off-road use only, carries one rider, and has no lights.
Quick facts
- The 2005 Honda CRF50F has a 49cc carbureted engine, a 3-speed gearbox and kick start.
- The 2005 CRF50F weighs 110 lb ready to ride and has a 21.6 in seat height.
- The 2005 CRF50F runs 2.50-10 33J front and 2.50-10 33J rear tires.
- The 2005 CRF50F takes 0.63 US qt (0.6 L) of 10W-40 engine oil; change it every 600 mi or 6 months.
- The 2005 CRF50F listed at $1,249 (US MSRP). It is not street legal in the US.
2005 Honda CRF50F photos
2005 Honda CRF50F specifications
Engine
- Displacement
- 49cc
- Fuel system
- Carburetor
- Bore × stroke
- 39 × 41.4 mm
- Compression
- 10.0:1
- Cooling
- Air
- Valve train
- SOHC
- Engine oil
- 0.63 US qt (0.6 L)
- Oil type
- 10W-40
Clutch
- Type
- Centrifugal
- Assist
- Auto
Drivetrain
- Starting
- Kick
- Transmission
- 3-speed
- Chain size
- 420
- Front sprocket
- 14T
- Rear sprocket
- 37T
Dimensions
- Dry weight
- 104 lb
- Seat height
- 21.6″
- Ground clearance
- 5.8″
- Wheelbase
- 36″
- Width
- 23″
- Height
- 30.7″
- Length
- 51.4″
- Curb weight
- 110 lb
- Fuel capacity
- 0.79 gal
Price & warranty
- Colors
- Red
Equipment
- Spark arrester
- Standard
- Ignition key
- Standard
- Throttle limiter
- Standard
- Lights
- Not fitted
Frame & steering
- Rake
- 25°
- Trail
- 1.3″
Suspension
- Front
- Telescopic fork
- Front travel
- 3.8″
- Rear travel
- 2.8″
Wheels & tires
- Front wheel
- 10″
- Rear wheel
- 10″
- Front tire
- 2.50-10 33J
- Rear tire
- 2.50-10 33J
Stock features
- Street legal (US)
- No
2005 Honda CRF50F maintenance
From the maker's manuals. Tap a row to see the manual page.
Service intervals
- Change engine oil (first time)
- After 100 mi or 1 month
- Change engine oil
- Every 600 mi or 6 months
- Clean air filter
- Every 600 mi or 6 months
- Inspect spark plug
- Every 600 mi or 6 months
Spark plug
- Spark plug
- NGK CR6HSA
- Plug gap
- 0.024 – 0.028 in (0.60 – 0.70 mm)
- Spark plug (alternative)
- DENSO U20FSR-U
- Spark plug (cold climate, below 41°F/5°C)
- NGK CR5HSA
- Spark plug (cold climate, below 41°F/5°C, alternative)
- DENSO U16FSR-U
- Spark plug (extended high speed riding)
- NGK CR7HSA
- Spark plug (extended high speed riding, alternative)
- DENSO U22FSR-U
Torque specs
- Oil drain bolt
- 18 ft‑lb (25 N·m, 2.5 kgf·m)
- Wheel axles
- 35 ft‑lb (47 N·m, 4.8 kgf·m)
Parts that fit the 2005 Honda CRF50F
Exact parts for this bike. Tap one to see every store selling it, cheapest first.
Maintenance
Oil, filters, spark plug and drive parts you replace as you ride.
Engine oilMotul 7100 4T 10W-40from $31.18 · 4 storesTakes 0.63 US qt (0.6 L): buy one 1 L bottle
- eBay · toyotaktmusaCheapest$31.18 ↗$22.19 + $8.99 ship
- Sportbike FL~$38.40 ↗$24.95 + ~$13.45 ship (est.)
- Partzilla.com$39.51 ↗$26.06 + $13.45 ship
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Fit from: Our specs, from the maker's manual
Air filterTwin Air 150318 air filterfrom $25.65 · 14 stores- eBay · motorcycleworksCheapest$25.65 ↗Free shipping
- Chaparral Motorsports$27.05 ↗$17.06 + $9.99 ship
- MX Locker$27.91 ↗$18.16 + $9.75 ship
Show 11 more storesShow fewer stores
- Active Powersports$28.08 ↗$17.88 + $10.20 ship
- SoCal Powersports$28.70 ↗$18.95 + $9.75 ship
- Moto-House MX$28.94 ↗$20.95 + $7.99 ship
- eBay · mc-powersportsandauto$29.38 ↗Free shipping
- Partzilla.com$29.76 ↗$19.81 + $9.95 ship
- DMG Motorsports~$29.94 ↗$19.95 + ~$9.99 ship (est.)
- eBay · leclarepowersports$29.99 ↗Free shipping
- MojoMotoSport.com$30.95 ↗$20.95 + $10.00 ship
- Red Plate Powersports$32.95 ↗$23.95 + $9.00 ship
- Summit Racing$32.98 ↗$18.99 + $13.99 ship
- Spaz Cycle$35.90 ↗$19.95 + $15.95 ship
Fit from: Twin Air's fitment list for this bike
Their listing: Honda CRF 50, 2000–2021
Spark plugNGK CR6HSAfrom $9.26 · 10 storesThe standard plug from the maker's manual
- eBay · mxpowerplayCheapest$9.26 ↗Free shipping
- eBay · maddparts$9.65 ↗$3.66 + $5.99 ship
- Walmart · The D Zone$11.79 ↗Free shipping
Show 7 more storesShow fewer stores
- MRP Motorsports~$12.89 ↗$4.90 + ~$7.99 ship (est.)
- Keystone Cycle Parts$12.90 ↗$4.95 + $7.95 ship
- Bob's Cycle Supply$12.94 ↗$4.95 + $7.99 ship
- RevZilla.com$13.38 ↗$5.39 + $7.99 ship
- eBay · worldwidecycles$14.38 ↗$6.39 + $7.99 ship
- Partzilla.com$15.04 ↗$5.09 + $9.95 ship
- Duffs Powersports~$17.98 ↗$9.99 + ~$7.99 ship (est.)
Fit from: Our specs, from the maker's manual
Front sprocketJT Sprockets 14-tooth steel sprocketfrom $11.72 · 2 stores14 teeth, the same as the bike came with from the factory. Some stores sell JT's self-cleaning version (part number ending SC): it fits the same.
Part number JTF1256.14: any parts counter can look it up.
Fit from: JT Sprockets' fitment list for this bike
Their listing: Honda CRF50F, 2004–2012
Rear sprocketJT Sprockets 37-tooth steel sprocketfrom $21.00 · 5 stores37 teeth, the same as the bike came with from the factory. Some stores sell JT's self-cleaning version (part number ending SC): it fits the same.
- eBay · chainbossCheapest$21.00 ↗Free shipping
- MX PowerPlay$21.55 ↗Free shipping
- Fast Joe Moto$22.00 ↗Free shipping
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Part number JTR1213.37: any parts counter can look it up.
Fit from: JT Sprockets' fitment list for this bike
Their listing: Honda CRF50F, 2004–2012
ChainD.I.D 420 D chain, 80 linksfrom $41.44 · 1 store
JT lists 78 links for this bike (count yours to be sure); stores sell this chain at 80. Cut it to length with a chain breaker (any shop can do it): spare links are normal. D.I.D D: a plain (unsealed) 420 chain, the kind these bikes come with.
Fit from: JT Sprockets' fitment list for this bike
Their listing: Honda CRF50F, 2004–2012
Tires
Stock sizes, from the maker's manual.
Front tireMichelin Starcross 5 Mini 2.50-10from $52.88 · 3 stores
Stock size for this bike
- Rocky Mountain ATV/MCCheapest$52.88 ↗$45.88 + $7.00 ship
- RevZilla.com$53.88 ↗$45.89 + $7.99 ship
- MojoMotoSport.com$62.95 ↗$52.95 + $10.00 ship
Fit from: Size from the maker's manual; tire model is our pick
Rear tireMichelin Starcross 5 Mini 2.50-10from $52.88 · 3 stores
Stock size for this bike
- Rocky Mountain ATV/MCCheapest$52.88 ↗$45.88 + $7.00 ship
- RevZilla.com$53.88 ↗$45.89 + $7.99 ship
- MojoMotoSport.com$62.95 ↗$52.95 + $10.00 ship
Fit from: Size from the maker's manual; tire model is our pick
Prices include shipping where the store lists it and were checked Nov 2, 2026. A store that doesn't list its shipping shows an estimate (~): what it charges on its other parts, or what paid shipping on this part typically costs. Prices change, so confirm at the store before you buy.
2005 Honda CRF50F vs 2004
None of the specs below changed from the 2004 model.
| Spec | 2004 | 2005 | Changed |
|---|---|---|---|
| Displacement | 49cc | Same | |
| Curb weight | 110 lb | Same | |
| Dry weight | 104 lb | Same | |
| Seat height | 21.6 in | Same | |
| Front travel | 3.8 in | Same | |
| Rear travel | 2.8 in | Same | |
| Fuel | 0.79 gal | Same | |
| Gearbox | 3-speed | Same | |
| Front tire | 2.50-10 33J | Same | |
| Rear tire | 2.50-10 33J | Same |
Honda CRF50F FAQ
What engine does the 2005 Honda CRF50F have?
An air-cooled 49cc single-cylinder four-stroke with an overhead-cam head and a carburetor, started by kickstarter, with a three-speed gearbox.
Does the 2005 Honda CRF50F have a clutch lever?
No. It has an automatic centrifugal clutch: the rider shifts the three gears with the foot lever, with no clutch lever to work.
What is the seat height of the 2005 Honda CRF50F?
21.6 in.
How much does the 2005 Honda CRF50F weigh?
Honda lists a curb weight of 110 lb, ready to ride with a full tank.
What is the weight limit of the 2005 Honda CRF50F?
88 lb (40 kg), including the rider and any accessories.
Can a parent limit the speed of the 2005 Honda CRF50F?
Yes. It has an adjustable throttle limiter that restricts top speed, and Honda's manual says to use it, with the bike in first gear, until a young rider is familiar with operating the motorcycle.
How much suspension travel does the 2005 Honda CRF50F have?
3.8 in at the front and 2.8 in at the rear.
How much fuel does the 2005 Honda CRF50F hold?
0.79 US gal (3.0 L), including the reserve.
What oil does the 2005 Honda CRF50F take?
SAE 10W-40 motorcycle oil (JASO MA), 0.63 US qt (0.6 L) after draining.
Is the 2005 Honda CRF50F street legal?
No. It is for off-road use only and has no lights.
What was the MSRP of the 2005 Honda CRF50F?
$1,249.
What size tires does the 2005 Honda CRF50F use?
2.50-10 33J front and 2.50-10 33J rear.
What spark plug does the 2005 Honda CRF50F take?
NGK CR6HSA (or DENSO U20FSR-U), gapped 0.024 – 0.028 in (0.60 – 0.70 mm).
What chain and sprockets does the 2005 Honda CRF50F use?
A 420 chain on a 14-tooth front and 37-tooth rear sprocket.
Is the 2005 Honda CRF50F different from the 2004 model?
None of the main specs changed from the 2004 model.
Other Honda CRF50F model years
Specs from Honda's owner's and service manuals, Honda's website and published spec sheets. Updated .