![]() Note that the Duratec is making peak power very low in the RPM range due to a very restrictive exhaust (soon to be replaced!), but the effect of the trumpets on engine performance is clear. EDR Yamaha R6 2008-2022 Velocity Stacks EDR Performance SERVICE CHASSIS & CONTROL PARTS (GRIP) TOOLS & APPAREL ABOUT US Shop By Make/Model Home EDR Yamaha R6 2008-2022 Velocity Stacks EDR Yamaha R6 2008-2022 Velocity Stacks 649.00 749. In both cases significant performance increases (typically 5-9bhp) are seen between 35 00-6000rpm when the carburettors are fitted with our trumpet kit. Additionally the torque curve is seen to be much smoother. The first tests have already been done by WSBK & BSB. Additionally when tuning for power increases a longer inlet tract (the distance from inlet to back of valve being the important length) has been found to be extremely beneficial, especially on a lower revving car engine.īelow are links to two different engines fitted with two popular bike carb kits (one 1800 zetec with R1 Mikuni carbs, one Ford 2.3 Duratec fitted with ZX9R carbs). The lower lines are both carb sets without trumpets and the higher lines are when fitted with our 50mm trumpets. MWR-VS-960 : Completely new velocity stacks for the new 2020 R1, lower stacks / upper stacks & bolts. Without this radius power and torque can both be negatively affected. Graves suggests using 4 stacks for drag race (overall power) use and 2. You will note that any manufacturers standard equipment will feature such a radius for this reason. set of Graves Velocity Intake Stacks The kit comes with 4 stock replacement stacks. Why fit velocity stacks or 'trumpets'? A radius at the inlet of an inlet tract serves to smooth and even out the flow into each intake runner. YAMAHA R6 RACE kit spec Bellmouth velocity stacks 2008 - 2023. ![]() Note that the silicone will stretch 3-4mm to fit larger diameters. These trumpets are suitable for a wide range of applications with cylindrical carburettor or throttle body inlet to allow the silicone to be clamped around. These trumpets are suitable for a wide range of applications with cylindrical carburettor or throttle body inlet to allow the silicone to be clamped around. (carburettors are NOT included, shown for illustration only)ĭanST Engineering began manufacturing these trumpets due to a shortage of available and reasonably priced trumpets for fitment on our specialist carb and throttle body conversions. Please note that this requires the original Trumpets to be cut and sanded flush with the top face of the aluminium carburettor body. The kit includes:Ĥx40mm bore trumpets available in 25/50/90mm lengths ![]() DanST Engineering are pleased to offer this high quality lightweight aluminum spun trumpet kit for fitment to Yamaha R6 Carburettors. Factory Pro Superflare Velocity Stacks for 2003 - 2005 Yamaha YZF-R6 boosts midrange and top end horsepower by optimizing the velocity stack length.
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