Upgrade your ride with the Valvetronic Designs universal valve muffler kit, a premium T304 stainless steel solution that delivers an aggressive, valved exhaust note at the click of a button
Upgrade your ride with the Valvetronic Designs universal valve muffler kit, a premium T304 stainless steel solution that delivers an aggressive, valved exhaust note at the click of a button
144x20 Forged Rod with ARP 2000 hardware.
Supertech 2mm oversized piston set including 20mm wrist pins.
Triple Groove retainer manufactured with high-quality military-certified Titanium alloy, and CNC machined for a tight fit.
Supertech 1.5mm oversized piston set including 20mm wrist pins.
Quick connect union T-fitting for 1/4" Nylon
Designed for Bosch 044 Fuel Pump
A significant upgrade to performance and feel over the stock mount.
Early B6 A4 w/ 5-Speed Manual Transmissions only.
Includes rings, wire locks, and wrist pins - 81.5mm bore, 8.5:1 CR, 86.4mm stroke (stock)
*For use with 20mm wrist pin connecting rods*
This high-performance engine kit combines an upgraded dual-spring valvetrain, Inconel and nitrided valves, a top-end gasket set, and premium tri-metal race main bearings.
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EFR delivers quick boost response, powerful performance and reliable durability - 0.80 A/R, T4 Twin Flow Flange, 49mm Compressor Inducer Dia, 62mm Compressor Wheel O.D., 58mm Turbine Wheel O.D.
*To be used with custom turbocharger applications only - T4 flange manifold, custom fueling, tuning/software, and internals necessary*
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
This product was last offered at the strikethrough price on
07-20-2026