The Pro Circuit T-4 Exhaust System is a tunable performance exhaust designed for select Honda mini motorcycles. Part number 4H00070 delivers the proven T-4 system design with a focus on responsive performance, practical sound control, and dependable fitment. This system is engineered for riders seeking an upgrade over the original exhaust while maintaining compatibility with the compact Honda platform.
The T-4 is a tunable version of Pro Circuit’s more specialized Ti-4R System. An RC-4 Resonance Chamber has been added to the head pipe to help reduce exhaust noise and refine the system’s overall performance characteristics. Depending on the model year of the motorcycle, the RC-4 Resonance Chamber may not be included with the system.
Fitment: This Pro Circuit T-4 Exhaust System fits the 2004–2009, 2011, and 2012 Honda CRF70F, as well as the 2000 and 2001 Honda XR70R. Confirm the motorcycle model and year before ordering to ensure proper compatibility. The brand is Pro Circuit, the manufacturer is Pro Circuit, and the manufacturer and vendor part number is 4H00070.
Features:
- Tunable T-4 design: Performance-oriented exhaust system based on Pro Circuit’s T-4 platform.
- RC-4 Resonance Chamber: Added to the head pipe to help reduce exhaust noise.
- Mini motorcycle fitment: Designed for select Honda CRF70F and XR70R models.
- Model compatibility: Fits 2004–2009, 2011, and 2012 Honda CRF70F motorcycles and 2000–2001 Honda XR70R motorcycles.
- Brand and part number: Pro Circuit 4H00070.
Fitment:
1998 Honda XR70R
1999 Honda XR70R
2000 Honda XR70R
2001 Honda XR70R
2002 Honda XR70R
2003 Honda XR70R
2004 Honda CRF70F
2005 Honda CRF70F
2006 Honda CRF70F
2007 Honda CRF70F
2008 Honda CRF70F
2009 Honda CRF70F
2010 Honda CRF70F
2011 Honda CRF70F
2012 Honda CRF70F