034-201-8015 - 034Motorsport Intake Valve, .5mm Oversized, Back Cut, 4v VW/Audi Product_Type Tuning and the upper and lower

and the upper and lower insert combined

Street Density

Engineered specifically for F80 M3 and F82 M4 models

The new aggressive exhaust note is accomplished by removing the heavy factory resonator and replacing it with a ready-to-install 034Motorsport Res-X Resonator Delete and integrated X-Pipe

get rid of the ugly stock plastic cover and tidy up the top of the motor - the woman in your life will thank you

034-201-8015 - 034Motorsport Intake Valve, .5mm Oversized, Back Cut, 4v VW/Audi Product_Type Tuning and the upper and lowerBlack Nitride oversize stainless intake valve for all 4v VW Audi motors including 16v,20v and 32v motors. Back cut valve head and stem greatly increase flow, we've seen up to 15cfm just from dropping these in an otherwise stock head. Fit with OEM seats, use with OE fit springs, retainers, guides, clips, etc. OE seats need to be cut to the new larger diameter, otherwise a direct fit for stock. Price each.