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Honda CRF150R Expert 2015

Renamed Honda CRF150R Big Wheel for 2020.

Intermediate · 6/10

Motocross / Racing

2015 Honda CRF150R Expert

150cc

4-stroke

34.1in

Seat height

10.8in

Front travel

5spd

Gearbox

2015 Honda CRF150R Expert overview

The 2015 Honda CRF150R Expert is a big-wheel motocross and competition dirt bike with a liquid-cooled, carbureted 150 cc four-stroke single-cylinder engine. Its SOHC four-valve engine pairs with a five-speed transmission and kickstarting. The Expert trim uses a 19-inch front wheel and 16-inch rear wheel, plus a longer swingarm, for a higher 34.1 in seat aimed at taller riders.

A 37 mm inverted Showa fork provides 10.8 in of front travel, while the Pro-Link Showa rear suspension offers 11.1 in. The bike has 13.2 in of ground clearance and a 1.14 gal fuel capacity. It is designed only for competition use by experienced junior riders and has a 150 lb rider weight limit.

Who it's for

This Expert trim is for experienced junior riders who race motocross and need the taller fit of a big-wheel bike. Its 34.1 in seat and 19/16-inch wheel setup suit taller riders better than the standard CRF150R, while its competition-only design makes it a poor choice for beginners. The 150 lb rider weight limit is an important fit restriction for anyone considering it.

Quick facts

  • The 2015 Honda CRF150R Expert has a 150cc carbureted 4-stroke engine, a 5-speed gearbox and kick start.
  • The 2015 CRF150R Expert has a 34.1 in seat height.
  • The 2015 CRF150R Expert runs 70/100-19 front and 90/100-16 rear tires.
  • The 2015 CRF150R Expert takes 0.59 US qt (0.56 L) of 10W-30 engine oil; change it every 6 races or about 15 hours.
  • The 2015 CRF150R Expert listed at $5,140 (US MSRP). It is not street legal in the US.

2015 Honda CRF150R Expert photos

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2015 Honda CRF150R Expert specifications

Engine

Displacement
150cc
Stroke
4-stroke
Fuel system
Carburetor
Bore × stroke
66 × 43.7 mm
Compression
11.7:1
Cooling
Liquid
Configuration
Single-cylinder
Valve train
SOHC
Valves
4
Oil chamber
Dual
Engine oil
0.59 US qt (0.56 L)
Oil type
10W-30
Gearbox oil
0.60 US qt (0.57 L)
Gearbox oil type
SAE 10W-30, JASO T 903 standard MA
Coolant
0.80 US qt (0.76 L)

Clutch

Type
Wet multiplate
Actuation
Cable
Assist
None (standard clutch)

Drivetrain

Starting
Kick
Transmission
5-speed
Chain size
420
Chain links
126
Front sprocket
15T
Rear sprocket
56T

Dimensions

Seat height
34.1″
Ground clearance
13.2″
Wheelbase
50.6″
Width
30.3″
Height
46.1″
Length
74.8″
Fuel capacity
1.14 gal

Frame & steering

Architecture
Semi double cradle
Rake
27.8°
Trail
3.8″

Suspension

Front
37mm inverted Showa fork
Front travel
10.8″
Rear
Pro-Link Showa single shock
Rear travel
11.1″

Wheels & tires

Front wheel
19″
Rear wheel
16″
Front tire
70/100-19 42M Dunlop MX71F
Rear tire
90/100-16 52M Dunlop MX71

Brakes

Front disc
220 mm
Rear disc
190 mm

Stock features

Street legal (US)
No

2015 Honda CRF150R Expert maintenance

From the maker's manuals. Tap a row to see the manual page.

Service intervals

Change engine oil (first time)
After the first break-in ride
Change engine oil
Every 6 races or about 15 hours
Replace oil filter (first time)
After the first break-in ride
Replace oil filter
Every 6 races or about 15 hours
Inspect gearbox oil
Every race or about 2.5 hours
Change gearbox oil
Every 6 races or about 15 hours
Clean air filter
Every race or about 2.5 hours
Clean air filter
Every moto (dusty riding conditions)
Inspect spark plug
Every race or about 2.5 hours
Replace piston and rings
Every 6 races or about 15 hours

Spark plug

Spark plug
NGK CR8EH-9
Plug gap
0.031 – 0.035 in (0.8 – 0.9 mm)
Spark plug (alternative)
DENSO U24FER9
Spark plug (optional)
NGK CR9EH-9
Spark plug (optional, alternative)
DENSO U27FER9

Torque specs

Oil drain bolt
16 ft‑lb (22 N·m, 2.2 kgf·m)
Oil filter cover bolts
7.4 ft‑lb (10 N·m, 1.0 kgf·m)
Gearbox oil drain plug
16 ft‑lb (22 N·m, 2.2 kgf·m)
Front axle nut
51 ft‑lb (69 N·m, 7.0 kgf·m)
Rear axle nut
65 ft‑lb (88 N·m, 9.0 kgf·m)
Upper triple clamp bolts
16 ft‑lb (22 N·m, 2.2 kgf·m)
Lower triple clamp bolts
16 ft‑lb (22 N·m, 2.2 kgf·m)
Steering stem nut
94 ft‑lb (128 N·m, 13.1 kgf·m)
Handlebar clamp bolts
16 ft‑lb (22 N·m, 2.2 kgf·m)
Front brake caliper mounting bolts
22 ft‑lb (30 N·m, 3.1 kgf·m)
Brake disc bolts
15 ft‑lb (20 N·m, 2.0 kgf·m)
Rear sprocket nuts
24 ft‑lb (32 N·m, 3.3 kgf·m)
Front sprocket bolt
9.6 ft‑lb (13 N·m, 1.3 kgf·m)
Chain adjuster locknut
20 ft‑lb (27 N·m, 2.8 kgf·m)
Shock absorber mounting bolts
32 ft‑lb (44 N·m, 4.5 kgf·m)
Coolant drain bolt
7.4 ft‑lb (10 N·m, 1.0 kgf·m)

Parts that fit the 2015 Honda CRF150R Expert

Exact parts for this bike. Tap one to see every store selling it, cheapest first.

Maintenance

Oil, filters, spark plug, battery, brakes and drive parts you replace as you ride.

Tires

Stock sizes, from the maker's manual.

Prices include shipping where the store lists it and were checked Nov 1, 2026. A store that doesn't list its shipping is placed as if it charged what the other stores do. Prices change, so confirm at the store before you buy.

2015 Honda CRF150R Expert vs 2014

None of the specs below changed from the 2014 model.

Spec20142015Changed
MSRP$5,140Same
Displacement150ccSame
Seat height34.1 inSame
Front travel10.8 inSame
Rear travel11.1 inSame
Fuel1.14 galSame
Gearbox5-speedSame
Front tire70/100-19 42M Dunlop MX71FSame
Rear tire90/100-16 52M Dunlop MX71Same

Honda CRF150R Expert FAQ

  1. What engine does the 2015 Honda CRF150R Expert have?

    It has a carbureted, liquid-cooled 150 cc four-stroke single-cylinder engine with SOHC and four valves.

  2. What oil does the 2015 Honda CRF150R Expert use?

    It uses 10W-30 engine oil, with a capacity of 0.6 US qt (0.56 L).

  3. How tall is the seat on the 2015 Honda CRF150R Expert?

    The seat height is 34.1 in.

  4. How much suspension travel does the 2015 Honda CRF150R Expert have?

    It has 10.8 in of front travel and 11.1 in of rear travel.

  5. How much fuel does the 2015 Honda CRF150R Expert hold?

    The fuel capacity is 1.14 gal.

  6. Is the 2015 Honda CRF150R Expert street legal?

    It is not street legal in the US.

  7. What was the MSRP of the 2015 Honda CRF150R Expert?

    Its MSRP was $5,140.

  8. How is the 2015 Honda CRF150R Expert different from the CRF150R?

    The Expert has 19-inch front and 16-inch rear wheels vs 17-inch front and 14-inch rear wheels, a 34.1 in seat vs 32.8 in, and 11.1 in of rear suspension travel vs 10.7 in. Its 15/56 sprocket gearing vs 15/50 and $5,140 MSRP vs $4,990 also distinguish the trims.

  9. What size tires does the 2015 Honda CRF150R Expert use?

    70/100-19 front and 90/100-16 rear.

  10. What spark plug does the 2015 Honda CRF150R Expert take?

    NGK CR8EH-9 (or DENSO U24FER9), gapped 0.031 – 0.035 in (0.8 – 0.9 mm).

  11. What chain and sprockets does the 2015 Honda CRF150R Expert use?

    A 420 chain with 126 links on a 15-tooth front and 56-tooth rear sprocket.

  12. Is the 2015 Honda CRF150R Expert different from the 2014 model?

    None of the main specs changed from the 2014 model.

Other Honda CRF150R Expert model years

Specs from Honda's owner's manual, Honda's website and published spec sheets. Updated .