Honda CBR125R Service Manual (2007-2010)

Honda introduced the CBR125R to Europe for the 2004 model year as a compact, accessible sports motorcycle built by Thai Honda. Honda positioned the model as an affordable entry point into the CBR family, using a liquid-cooled four-stroke single-cylinder engine in a lightweight full-faired chassis. Its modest dimensions, low running costs and six-speed gearbox made it particularly attractive to new riders, while its styling deliberately echoed larger CBR sports bikes. Honda’s original European announcement described it as a 125 cc on-road sports model intended for markets such as Germany and France: Honda’s 2004 European model announcement.

The first major evolution arrived for 2007. Honda retained the basic liquid-cooled OHC single-cylinder layout but replaced the carburetor with PGM-FI electronic fuel injection, using a 30 mm throttle body and electronic engine management. The factory service data for this generation specifies a 58.0 × 47.2 mm bore and stroke, 11.0:1 compression ratio, six-speed constant-mesh transmission and chain final drive. The chassis remained deliberately simple and light, with a diamond-type frame, telescopic fork, swingarm rear suspension and disc brakes at both ends. These changes created a cleaner-running, more modern fuel-injected 125 cc sport motorcycle while preserving the approachable character of the original model.

The 2007-2010 CBR125RW generation also received styling revisions that moved it visually closer to Honda’s larger supersport machines. The compact proportions remained, but the front bodywork and graphics were updated while the mechanical package concentrated on reliability, economy and predictable handling. Factory specifications list a 1,295 mm wheelbase, 127 kg curb weight, 10-litre fuel tank, 17-inch wheels and relatively narrow 80/90 front and 100/80 rear tyres. The result was a light road bike designed to be easy to manage in urban use while still giving new riders the feel and control layout of a conventional geared sports motorcycle.

This fuel-injected version continued through 2010. Honda parts documentation identifies the family as CBR125RW-7, CBR125RW-8, CBR125RW-9 and CBR125RW-A for the 2007, 2008, 2009 and 2010 model years. The next major break came for 2011, when Honda described the replacement CBR125R as an all-new model with larger proportions, wider 17-inch tyres, revised bodywork, a larger 13-litre fuel tank and updated fuel-injection settings. Honda’s 2011 press material explicitly contrasts that new machine with the preceding CBR125R, establishing the 2007-2010 CBR125RW as a distinct generation: Honda 2011 CBR125R press pack.

This product covers that 2007-2010 fuel-injected CBR125RW generation. The factory service publication is dated March 2007 and documents the PGM-FI specification introduced for this version, while model-code and parts references confirm continuity through 2010 before the all-new 2011 replacement. Related publications are grouped in the Honda CBR125R service manual catalog.