Feuling
Feuling, 3" 70mm ID velocity stack. With backing plate kit
Feuling, 3" 70mm ID velocity stack. With backing plate kit
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Velocity stack finish: Raw Machined. Backing plate finish: Black hard anodized finish. 3" tall high flow billet aluminum velocity stack; 4" (102mm) opening with internal taper down to 70mm ID. Fits M8 70mm throttle body with 3-hole bolt pattern. This kit includes the backing plate and hardware for standard head breathers. Impressive HP and TQ gains on engines running modified and ported cylinder heads and intakes with larger throttle bodies. Great performance part for racing and for those that want to head to the track on the weekend. MADE IN THE USA. Note: Special Order Product only. To order please contact your MCS sales representative.
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Why buy from Forty5°
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Verified compatibility
Every part we ship is checked against your bike's platform, year, and engine. If it doesn't fit, we tell you before you check out.
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Workshop installation
Book a serviceHave us fit it. Book installation at parts intake — same-day on most jobs, master techs only.
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Founder-led aftersales
Get in touchQuestions after fitment? You'll speak to the people who installed it. We answer email and WhatsApp seven days a week.