Boyesen Dual Stage Power Reeds 640

Specifications

Boyesen's revolutionary dual-stage reed design delivers more usable power than stock. Your original one-stage reed operates most effectively only within a narrow RPM range. Boyesen's one soft reed on top of one firm flow-through reed gives you a wide range of intake control, plus increased intake velocity. Your original reeds can't possibly duplicate that performance. Dual-stage reeds. Minor change give major HP improvements. Faster opening and closing. Greater low pressure (low-throttle) response. Greater velocity and flow area.

Related Items

2003-2008 Yamaha YZ250 YZ450F 19″ x 2.15 OEM Excel Rear Wheel (Stock Hub Rim) M9

For Honda Shadow VT 750 1100 / VTX 1300 1800 8″ 10″ Rise 1″ Ape Hanger Handlebar

Top End Piston Kit For Husqvarna TE 150 2017-2019, TE 150 i 2020; VTK24101A-1

Wave Rear Disc Brake Rotor for Yamaha YZ125 YZ250 YZ250F YZ450F WR250F WR450F

118 LINKS D.I.D DID 525VX3 525 VX3 NATURAL STEEL CHAIN with Rivet Master Link

Turner Performance Products 7075 Billet Aluminum Footpegs – Black TRS793-BK

1PC Chrome Stainless Steel Reusable Spin-On Oil Filter Kit For Harley Touring

16100-KEN-B11 CARBURETOR FOR HONDA 2007 -2012 CMX250C REBEL 16100-KEN-670 New