Suzuki GSXR 600 Velocity Stack Trumpet Kit, 40mm diameter, 50mm Long
danST Engineering are pleased to offer this high quality velocity stack kit for suzuki GSXR600 throttle bodies. The kit consists of the following:
4x Flange fitment 40mm Diameter Spun Aluminium trumpets 50mm long (90mm long also available, please see our other items)
4x Clamp Rings with Inside Diameter 45.5mm and Outside Diameter of 75mm
8x M6 Button Head Screws
4x M5 Grub Screws
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 PX500 or PX600 with the appropriate baseplate can be incorporated into the kit if desired. Please contact us for further information and fitment options.
NOTE! Please measure and ensure your throttle bodies have an outside diameter of 45mm at the inlet where the clamp rings will slot over. This kit may be suitable for other throttle bodies with the same measurement.
Should you have another throttle body diameter please contact us - we may be able to make a similar kit to suit.
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. You will note that any manufacturers standard equipment will feature such a radius for this reason. Without this radius power and torque can both be negatively affected. 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.
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!
These kits are in stock.
See our other items for related inlet and exhaust parts. Further information can be found on our danST Engineering Facebook site.
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