2009 Husqvarna CR125
General Specifications
| Model | Husqvarna CR125 |
| Year | 2009 |
| Category | Motocross |
| Engine Type | Single-cylinder, liquid-cooled, 2-stroke with reed-valve induction and mechanically controlled H.T.S. exhaust power valve |
| Weight | 93 kg dry |
Engine
| Displacement | 124.82 cc |
| Bore x Stroke | 54.0 x 54.5 mm |
| Compression Ratio | 8.8:1 with exhaust ports closed |
| Fuel System | Mikuni TMX 38 mm carburettor with reed-valve induction | Replacement Options |
| Ignition | Electronic CDI with variable advance |
| Spark Plug | NGK BR9EG or Champion QN84 |
| Spark Plug Gap | 0.6 mm |
| Cooling System | Liquid cooled with water-pump circulation and twin radiators |
| Starting System | Kick starter |
Transmission
| Transmission | 6-speed constant-mesh manual |
| Clutch | Wet multi-plate, mechanically operated; 7 driving and 6 driven plates |
| Final Drive | Chain; 13-tooth front / 50-tooth rear sprockets |
Dimensions
| Overall Length | 2165 mm |
| Overall Width | 840 mm |
| Overall Height | 1320 mm |
| Wheelbase | 1460 mm |
| Ground Clearance | 370 mm |
| Seat Height | 990 mm |
| Fuel Capacity | 9.5 L |
Chassis
| Frame | Steel single-tube cradle frame with round-section tubing and light-alloy rear subframe |
| Front Tyre | 80/100-21 Pirelli MT32A | Tyre Size Guide |
| Rear Tyre | 100/90-19 Pirelli MT32 | Tyre Size Guide |
Suspension
| Front Suspension | 50 mm Marzocchi upside-down telescopic hydraulic fork with compression and rebound adjustment | Fork Oil Levels |
| Front Suspension Travel | 300 mm |
| Rear Suspension | Sachs Progressive Soft Damp hydraulic monoshock with spring preload, rebound and dual compression adjustment |
| Rear Suspension Travel | 296 mm |
| Fork Oil | AGIP Fork 7.5 (SAE 7.5); SAE 5 permitted for very cold climates |
Brakes & Wheels
| Front Brake | 260 mm Brembo fixed hydraulic disc with floating 2-piston caliper |
| Rear Brake | 240 mm Brembo floating hydraulic disc with floating 2-piston caliper |
| Front Wheel Size | 1.60 x 21 in light-alloy rim |
| Rear Wheel Size | 2.15 x 19 in light-alloy rim |
Service Data
| Fuel Type | Premium unleaded petrol, minimum 95 RON |
| Premix Information | 3% oil mixture, approximately 33:1 | Premix Calculator |
| Gearbox Oil | 0.8 L motorcycle transmission oil suitable for wet clutches |
| Air Filter | Oiled foam air filter |
| Service Notes | Competition motocross model. Regularly clean and oil the air filter, inspect the piston, rings, reed valve and H.T.S. power-valve system, change transmission oil frequently and check chain, wheel bearings, steering-head bearings and suspension linkage after race use. |
2009 Husqvarna CR125 – Bigger Marzocchi Forks for the Italian 125
The 2009 Husqvarna CR125 was an evolutionary development of the substantially revised 2008 machine rather than a completely new generation. The basic 124.82cc two-stroke engine, six-speed gearbox and steel chassis remained, but Husqvarna continued refining the suspension and chassis package while keeping the CR125 alive as one of the increasingly rare European 125cc motocross machines.
The most obvious technical change was at the front. The CR125 moved to a large 50 mm Marzocchi upside-down fork with adjustable compression and rebound damping and 300 mm of travel. At the rear, a Sachs Progressive Soft Damp shock provided extensive adjustment through Husqvarna's linkage system. Owners rebuilding the front suspension can use the MXOwners fork oil reference alongside the factory SAE 7.5 oil specification.
The engine retained the familiar 54.0 x 54.5 mm bore and stroke, mechanically controlled H.T.S. exhaust power valve and 38 mm Mikuni TMX carburettor. As with any competition 125, correct jetting and an airtight intake system are essential, and the MXOwners carburettor replacement options can help when original components are worn beyond service.
For owners today, the 2009 CR125 deserves careful inspection of the piston and rings, power-valve mechanism, reed petals, crank bearings and transmission oil, along with the usual wheel, steering-head and linkage bearings. Its 21-inch front and 19-inch rear wheel sizes remain conventional motocross dimensions, and modern replacements can be checked with the MXOwners tyre size guide. The 2009 CR125 remains a distinctive late-period Italian Husqvarna: light, mechanically straightforward and built at a time when few manufacturers were still seriously developing the traditional 125 two-stroke motocrosser.