Fuel Management

The latest carbon fiber technology with all the advantages of Boyesen's patented dual-stage reed designResponds quickly and accurately to changes in piston speed for smooth, dependable throttle...

For use with all current S&S intake manifoldsMade in the U.S.A.

Highest quality rubber polymerEthanol resistantCompetitively priced OEM replacement Yamaha -- Big Bear 350 4x4 -- (1997, 1988, 1990, 1994, 1996, 1987, 1993, 1995, 1989, 1991, 1992); Yamaha -- Big...

For use with all current S&S intake manifoldsMade in the U.S.A.

Respond quickly and accurately to piston speed changes for smooth, dependable throttle responseHigh-tech carbon fiber with all the advantages of Boyesen's exclusive dual-stage reed designOffer the...

Respond quickly and accurately to piston speed changes for smooth, dependable throttle responseHigh-tech carbon fiber with all the advantages of Boyesen's exclusive dual-stage reed designOffer the...

Respond quickly and accurately to piston speed changes for smooth, dependable throttle responseHigh-tech carbon fiber with all the advantages of Boyesen's exclusive dual-stage reed designOffer the...

Respond quickly and accurately to piston speed changes for smooth, dependable throttle responseHigh-tech carbon fiber with all the advantages of Boyesen's exclusive dual-stage reed designOffer the...

Respond quickly and accurately to piston speed changes for smooth, dependable throttle responseHigh-tech carbon fiber with all the advantages of Boyesen's exclusive dual-stage reed designOffer the...

Respond quickly and accurately to piston speed changes for smooth, dependable throttle responseHigh-tech carbon fiber with all the advantages of Boyesen's exclusive dual-stage reed designOffer the...

Respond quickly and accurately to piston speed changes for smooth, dependable throttle responseHigh-tech carbon fiber with all the advantages of Boyesen's exclusive dual-stage reed designOffer the...

Respond quickly and accurately to piston speed changes for smooth, dependable throttle responseHigh-tech carbon fiber with all the advantages of Boyesen's exclusive dual-stage reed designOffer the...