" Knowing the McCulloch SP125 "

Model .................Crankshaft No ..........Bore/stroke...........Conrod No............Capacity....  bore 797............................66010.................2.280"/ 1.835...............66049............. 123cc .......... Steel Super 797..................66010.................2.280"/ 1.835.............. 66049..............123cc  ......... Steel CP125.........................69346...............2.280"/ 1.835.................69250.............123cc  ......... Steel CP125s.......................69346...............2.280"/ 1.835.................69250.............123cc .......... Steel Super Pro 125............85476...............2.280"/ 1.835.................85606.............123cc .......... Steel Super Pro 125c..........85476...............2.280"/ 1.835 ................88623.............123cc ....... chrome

Boost Ports 797............................ No Super 797.................. Yes bolt in CP125........................ no CP125s....................... no Super Pro 125............ no Super Pro 125c.......... No

Flywheel advanced 5 degree 68282 797............................. no Super 797................... no CP125......................... yes CP125s....................... yes Super Pro 125............ yes Super Pro 125c.......... yes

Coil mounting SP125C  same as early 10 series ==========================

Adjustable Hi Speed Jet 797............................ yes Super 797.................. yes CP125........................ yes sdc20 CP125s....................... yes sdc20 Super Pro 125............ yes Super Pro 125c.......... No fixed sdc124

SP125C Counterweighted crankshaft Larger wristpin and bearing set 88623

Can be fitted with the 101 series of Kart engines

Note the SP125C cannot be rebored unless you plan on fitting a sleeve as it has a chromed bore

Captured competing at the Australian Nationals in 2008 Here beating the Stihls and huskies in the over 100cc production saws The McCulloch SP125C was stock

Here's the chainbrake assy fitted to the 1977 model of the SP125c  ...... nowadays very hard to find.