2004 Husqvarna CR125
General Specifications
| Model | Husqvarna CR125 |
| Year | 2004 |
| Category | Motocross |
| Engine Type | Single-cylinder, liquid-cooled, 2-stroke with reed-valve induction and mechanically controlled H.T.S. exhaust power valve |
| Weight | 94.8 kg dry |
Engine
| Displacement | 124.82 cc |
| Bore x Stroke | 54.0 x 54.5 mm |
| Compression Ratio | 8.8:1 with ports closed |
| Fuel System | Mikuni TMX 38 mm carburettor | Replacement Options |
| Ignition | Digital capacitor-discharge ignition with variable advance |
| Spark Plug | NGK BR9EG or Champion QN84 |
| Spark Plug Gap | 0.6 mm |
| Cooling System | Liquid cooled with pump circulation |
| Starting System | Kick starter |
Transmission
| Transmission | 6-speed manual |
| Clutch | Wet multi-plate mechanically operated clutch |
| Final Drive | Chain; 13-tooth front / 50-tooth rear sprockets |
Dimensions
| Overall Length | 2165 mm |
| Overall Width | 820 mm |
| Overall Height | 1300 mm |
| Wheelbase | 1460 mm |
| Ground Clearance | 370 mm |
| Seat Height | 980 mm |
| Fuel Capacity | 8.5 L |
Chassis
| Frame | Single-beam steel frame using circular-section tubes with light-alloy rear subframe |
| Front Tyre | 80/100-21 | Tyre Size Guide |
| Rear Tyre | 100/90-19 | Tyre Size Guide |
Suspension
| Front Suspension | 45 mm Marzocchi upside-down hydraulic fork, adjustable for compression and rebound | Fork Oil Levels |
| Front Suspension Travel | 300 mm |
| Rear Suspension | Sachs hydraulic monoshock with progressive Soft Damp linkage, adjustable for compression, rebound and spring preload |
| Rear Suspension Travel | 320 mm |
| Fork Oil | AGIP Fork 7.5; SAE 5 recommended for very cold climates; oil level 80 mm |
Brakes & Wheels
| Front Brake | 260 mm hydraulic disc with floating caliper |
| Rear Brake | 220 mm hydraulic disc with floating caliper |
| Front Wheel Size | 1.60 x 21 in Takasago Excel |
| Rear Wheel Size | 2.15 x 19 in Takasago Excel |
Service Data
| Fuel Type | Premium unleaded petrol, 98 RON |
| Premix Information | 4% oil mixture during running-in (25:1); not less than 3% after running-in (approximately 33:1) | Premix Calculator |
| Gearbox Oil | 0.8 L AGIP City 4T or equivalent wet-clutch-compatible motorcycle oil |
| Air Filter | Oiled foam air filter |
| Service Notes | Competition motocross model. Regularly service the air filter, gearbox oil, piston and rings, reed valve, H.T.S. power-valve system, chain, wheel bearings and suspension linkage. Correct fork oil level and linkage lubrication are especially important on older examples. |
2004 Husqvarna CR125 – Another Refinement of the Italian Two-Stroke
The 2004 Husqvarna CR125 was primarily an evolutionary model rather than an all-new generation. Husqvarna retained the established Italian-built 124.82cc two-stroke engine, six-speed gearbox, steel chassis and long-travel European suspension package, with the year's changes centred more on detail refinement and appearance than a fundamental redesign.
Its engine continued to use a 54.0 x 54.5 mm bore and stroke, reed-valve induction, the mechanically controlled H.T.S. exhaust power valve and a 38 mm Mikuni TMX carburettor. The CR125 remained very much a competition-focused 125, rewarding riders who kept the engine spinning and the carburation correctly sorted. Owners dealing with worn or modified induction systems can compare replacement carburettor options when rebuilding the fuel system.
The chassis used a steel single-beam layout with a light-alloy rear subframe. Up front was a 45 mm Marzocchi inverted fork with 300 mm of travel, while a Sachs shock and progressive linkage provided 320 mm at the rear. Correct oil level is critical when servicing these forks, and the MXOwners fork oil reference is useful when checking setup information.
For today's owner, condition is more important than mileage. The H.T.S. power valve, piston and rings, wheel and linkage bearings, air-filter sealing and suspension condition all deserve careful inspection. The MXOwners Bearing Finder can help when identifying replacements during a chassis rebuild. The 2004 CR125 remains a good example of Husqvarna's Italian period: light, distinctive and less common than its Japanese rivals, yet still a serious race-bred 125 two-stroke.