Keep your Honda mini-motocross bike tearing up the track with the ProX Connecting Rod Kit (Part No. 03.1105). 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 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 racing conditions.
Vehicle Fitment
| Make | Model | Year Range | Specific Years |
| Honda | CR80R / CR80RB Expert | 1986–2002 | 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002 |
| Honda | CR85R / CR85RB Expert | 2003–2007 | 2003, 2004, 2005, 2006, 2007 |
Kit Contents:
- Forged Connecting Rod
- Crankpin
- Big-End Bearing
- Small-End (Wrist Pin) Bearing
- Thrust Washers (where applicable)
TSO Tip
Small-bore CR 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...
| Year | Make | Model |
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