| Product-Nr. | Product | Description | Retail € (without tax) |
|
| HC2047-1in-kx | Camshaft | Drastically improves and top-end power.Comes with adjustable sprockets. Recommended install with exhaus camshaft stage 1. | 185,35 | |
| VF40-40148/KLX400 | Valve Springs Kit | Valve Springs Kit, 2001 - 2006. | 205,61 | |
| 28.3402-1 | Valve | Prox Exhaust Valve ,Model 2003. | 15,92 | |
| 28.3402-2/KLX400 | Valve | Prox Intake Valve , Model 2003. | 12,37 | |
| 40001-K01 | Cylinder | New Cylinder with Standard bore 90,00 mm with piston and TP-gasket. For years of construction 2003 - 2004. 11.3:1 | 564,43 | |
| 41001-K01 | Cylinder | New Big Bore cylinder + 4 mm oversize ( 434 cc ). cylinder with piston and TP-gasket. For years of construction 2003 - 2004. 11.3:1 | 655,15 | |
| 40001-K01HC | Cylinder | cylinderkit std.bore Hi comp 90mm with piston and TP-gasket, year 2003-2004, 13.5:1 | 584,59 | |
| C8630/KLX400 | Connecting Rod | Connecting Rod Kit, 2003 - 2004. | 192,43 | |
| C4402/KLX400 | Connecting Rod | Prox connecting Rod Kit, Model 2003. | 143,71 | |
| HR4259 | Crankshaft | Stroker Crankshaft , + 4mm , 424 cc , 2003 - 2004. | 458,18 | |
| HR4059/KLX 400 | Crankshaft | Crankshaft , 2003 - 2006. | 370,95 | |
| 31.3403/KLX400 | Cam Chain | Prox Cam Chain, Model 2003. | 55,84 | |
| 34.3420 | Gaskets | Gaskets KLX 400, Model 2003 | 88,86 | |
| 35.3420 | Gaskets | Prox Top End Set, Model 2003. | 39,12 | |