danST Engineering are pleased to offer this high quality velocity stack kit for suzuki GSXR750 SRAD throttle bodies. The kit consists of the following:
4x Flange fitment 50mm Diameter Spun Aluminium trumpets 50mm long (90mm also available)
4x Clamp Rings with Inside Diameter 54.2mm and Outside Diameter of 75mm
8x M6 Button Head Screws
4x M5 Grub Screws
A dimensional drawing of the available trumpet sizes can be seen here:
This kit has been designed for anyone running the bike throttle bodies without the original airbox arrangement - particularly in kit or modified car applications.
A pipercross or with the appropriate baseplate can be incorporated into the kit if desired. Please for further information and fitment options.
NOTE! Please measure and ensure your throttle bodies have an outside diameter of 54mm at the inlet where the clamp rings will slot over. This kit may be suitable for other throttle bodies with the same measurement.
Below 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. In both cases significant performance increases (typically 5-9bhp) are seen between 3500-6000rpm when the carburettors are fitted with our trumpet kit. Additionally the torque curve is seen to be much smoother. 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. We see so many bike carb conversions running without any trumpets (bike breakers often remove them along with the original bike airbox) - ALL of which would see the benefits highlighted below, probably the cheapest power you can find!
Should you have another throttle body diameter please - we may be able to make a similar kit to suit
