Keep your young rider's mini rocket tearing up the track with the ProX Connecting Rod Kit (Part No. 19-9028 / 03.6104). Manufactured in Japan from ultra-tough, double-forged alloy steels, this kit is engineered to handle the brutal high-RPM environment of high-strung two-stroke mini engines while meeting or exceeding strict OEM standards.
Each rod is shot-peened and barrel-finished to completely eliminate surface micro-imperfections, relieve residual stress, and optimize structural grain flow for maximum fatigue resistance. Strategically placed lubrication slots ensure optimal oil delivery and cooling to the big-end bearing, guaranteeing dependable durability under hard mini-racing conditions.
Vehicle Fitment
| Make | Model | Year Range | Specific Years |
| KTM | 85 SX (17/14) | 2003–2012 | 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 |
| KTM | 105 SX | 2004–2011 | 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 |
Kit Contents:
- Forged Connecting Rod
- Crankpin
- Big-End Bearing
- Small-End (Wrist Pin) Bearing
- Thrust Washers (where applicable)
TSO Tip
Small-bore 85cc and 105cc cranks spin at exceptionally high RPMs, making accurate truing critical. Always check your crankshaft total indicated runout (TIR) on V-blocks with a dial indicator—keep it strictly under 0.03mm before dropping the assembly back into the cases. Generously pre-lubricate the lower rod bearing with clean two-stroke premix oil during assembly to prevent any dry-start scuffing on initial fire-up.
Compatibility
Fetching compatibility details...
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