Upgrade the intake performance of your motorcycle with Boyesen 631 Dual-Stage Motorcycle Reeds. Designed to improve throttle response, airflow, and overall engine performance, these replacement reed petals use a dual-stage design that helps deliver efficient operation across a broad range of engine speeds. The Boyesen brand is recognized for precision-engineered powersports components, and Part Number 631 is manufactured for select Honda two-stroke motorcycles.
These reeds are engineered for improved low-pressure, low-throttle response while increasing air velocity and flow area. Their faster opening and closing characteristics can contribute to stronger acceleration and noticeable horsepower improvements with a relatively simple installation. The durable construction also promotes longer service life, and the reed design helps prevent engine damage if a reed breaks during operation.
Feature: Dual-stage reed design for improved intake performance
Feature: Faster opening and closing for responsive engine operation
Feature: Improved low-pressure and low-throttle response
Feature: Increased air velocity and flow area
Feature: Designed to support horsepower improvements
Feature: Durable construction for extended service life
Feature: Engine-friendly design helps prevent damage if broken
Boyesen Part Number 631 fits the 1996–2002 Honda CR80RB Expert and the 2003–2005 Honda CR85R. Verify the motorcycle model and year before ordering to ensure proper fitment. This product is manufactured by Boyesen and is also identified by vendor part number 631.
Features:
- Dual-stage reed design for improved intake performance
- Faster opening and closing for responsive engine operation
- Improved low-pressure and low-throttle response
- Increased air velocity and flow area
- Designed to support horsepower improvements
- Durable construction for extended service life
- Engine-friendly design helps prevent damage if broken
- Fits 1996–2002 Honda CR80RB Expert and 2003–2005 Honda CR85R
Fitment:
1987 Honda CR80R
1988 Honda CR80R
1989 Honda CR80R
1989 Suzuki RM80
1990 Honda CR80R
1990 Suzuki RM80
1991 Honda CR80R
1991 Suzuki RM80
1992 Honda CR80R
1992 Suzuki RM80
1993 Honda CR80R
1993 Suzuki RM80
1994 Honda CR80R
1994 Suzuki RM80
1995 Honda CR80R
1995 Suzuki RM80
1996 Honda CR80R
1996 Honda CR80RB Expert
1996 Suzuki RM80
1997 Honda CR80R
1997 Honda CR80RB Expert
1997 Suzuki RM80
1998 Honda CR80R
1998 Honda CR80RB Expert
1998 Suzuki RM80
1999 Honda CR80R
1999 Honda CR80RB Expert
1999 Suzuki RM80
2000 Honda CR80R
2000 Honda CR80RB Expert
2000 Suzuki RM80
2001 Honda CR80R
2001 Honda CR80RB Expert
2001 Suzuki RM80
2002 Honda CR80R
2002 Honda CR80RB Expert
2003 Honda CR80R
2003 Honda CR80RB Expert
2003 Honda CR85R
2003 Honda CR85RB Expert
2004 Honda CR85R
2004 Honda CR85RB Expert
2005 Honda CR85R
2005 Honda CR85RB Expert
2006 Honda CR85R
2006 Honda CR85RB Expert
2007 Honda CR85R
2007 Honda CR85RB Expert