Velocity Stacks

GMR Velocity Stacks/Air Horns/ Trumpets Straight Bolt on

Name: GMR Velocity Stacks/Air Horns/ Trumpets Straight Bolt on
Brand: GMR
SKU: GMR-C-00066
Price: 30.00 GBP
Availability: InStock

from £25.00

from £30.00 inc. VAT

MADE TO ORDER

Built in approx 10 working days

Delivered in around 13 working days — about Fri 30 Oct if ordered today

Super-lightweight carbon composite velocity stack.Up to 5,000× more heat-insulative than aluminium, keeping intake temps lower for more consistent power.Direct bolt-on fit with the common M5 × 65 mm Jenvey/Weber mounting spacing.Made to order.

Want this, but not quite like this?

A different size, a bore spacing we don’t list, a port shape to suit your head, a fitting somewhere else — we make these ourselves, so most of it is a drawing change rather than a new product. Tell us what you need and we’ll price it.

What’s included

Priced per stack, made to your throttle body entrance size, length and bore spacing. Order the quantity you need — a four-cylinder engine takes four.

In the price

One carbon composite velocity stack, bolt-on to the common M5 × 65mm Jenvey/Weber spacing

Not included

Mounting bolts, throttle bodies and airbox

Advanced Carbon Composite Velocity Stack

Manufactured using Direct Digital Manufacturing (DDM) from high-strength carbon composite, these velocity stacks are super lightweight and exceptionally insulative. Designed to fit the common M5 × 65 mm Jenvey/Weber mounting spacing, they’re a true bolt-on upgrade.

Why Our Velocity Stacks Lead the Way

- Hollow Carbon Composite Construction
  Unlike aluminium, our stacks are naturally insulating. In fact, they are up to 5,000 times more effective at preventing heat transfer than metal. This keeps intake air cooler, reduces heat soak, and delivers more consistent power.
- Ultra-Lightweight
  With an incredible weight saving over aluminium, our velocity stacks improve throttle response and reduce overall vehicle mass.
- Efficient & Sustainable Manufacturing
  DDM only adds material where needed – resulting in less than 0.001% waste during production.
- Optimised Geometry, Perfect Fit
  Each velocity stack is precision-designed for your throttle body size, bore spacing, and length requirements. With the standard Jenvey/Weber M5/M6 × 65 mm bolt pattern, installation is quick and hassle-free.

Priced individually

Made to order.