eBay

Listing Template 2018

danST Engineering 50mm Aluminum Spun Trumpet

danST Engineering are pleased to offer this high quality lightweight aluminum spun trumpet. Features:

50mm Bore

75mm Outer Diameter at Radius End

1.2-1.4mm material thickness

Jenvey/Weber Lower Mounting Flange (65mm Hole Centers)

Lightweight Aluminium Construction

Natural Polished Aluminum Finish

Length 25/50/90mm - Please specify using the drop down menu (If no drop down is available i.e ebay listings, please specify length in notes during checkout)

danST 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. Specifically we needed trumpets to suit our popular GSXR throttle body kits for use on kit and modified cars - hence the 50mm bore to suit GSXR1000 tapered throttle bodies. The trumpets form part of a modular kit danST Engineering offer for the GSXR type throttle bodies (danST CNC aluminium clamp rings are required to secure the trumpets to the GSXR bodies, see our other listings).

However, these trumpets are also a universal design - the flange suits Jenvey and Weber type bolt down fitment with 65mm hole centers. The flange could also be cut off should you wish to connect to a throttle body with silicone hoses and jubilee clips.

The listing is for a single trumpet - please order in multiples as required - postage can be combined so please request a total at the checkout and we will amend the total accordingly.

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!

See our other items for related inlet and exhaust parts. We stock a range of custom components including Pipercross Air Filter baseplates to suit our GSXR throttle body system.

Further information can also be found on our DANST Engineering Facebook site.

Thanks for Looking.

Please Google Search 'Danst Engineering' to navigate to our homepage where you will find further tehcnical information on many of our listed products.

Pricing FAQ: Why are your prices so expensive on ebay?

Answer: We need to account for all tax, carriage and ebay fee?s within the buy-it-now price. It costs between 15-20% of the buy-it-now price to sell on ebay and this must therefore be passed on to the ebay buyer. Ebay fee's are charged on both the tax and the carriage (yes, basically a tax on top of a tax!). Our calculation is therefore:

[(RRP + Carriage) x 1.2] x 1.2

The first multiplier of 1.2 is VAT. The second 1.2 multiplier is to cover the ebay fee?s. We hope that this goes some way to explaining why our ebay prices are more expensive.