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 available in 25/50/90mm Lengths

4x Clamp Rings with Inside Diameter 54.2mm and Outside Diameter of 75mm

8x M6 Button Head Screws

4x M5 Grub Screws


OPTIONS: We offer an optional set of 10mm spacer rings as an option. These will stack on top of the first set of clamp rings and lift the trumpets by a further 10mm. This is required if you wish to run a Pipercross type air filter backplate and ensure it clears the standard GSXR fuel rail. 

 

A dimensional drawing of the available trumpet sizes can be seen here: Velocity Stack Dimension Drawing

 

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 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!

 

1800 Zetec on 40mm R1 Carbs, no trumpets vs danST 50mm trumpet kit

2300 Ford Duratec ZX9R Carbs, no trumpets vz danST 50mm trumpet kit

 

Should you have another throttle body diameter please contact us - we may be able to make a similar kit to suit

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Velocity Stack Kit for GSXR750 SRAD Throttle Bodies All Lengths

  • £125.00

  • Ex Tax:£125.00

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Tags: Trumpet, Velocity Stack, Weber, Jenvey