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New Product now available



We can supply a range of parts for your engine from 
  • Super Charge Pulley Upgrades
  • Fuel Pumps
  • Diverter Valves (DV) 
  • Cam Followers
  • Positive Crankcase Ventilation (PCV)
  • Forged Internals
  • Inter coolers
  • Charge Coolers


Contact us direct for details and prices

Forge Supercharger Reduction Pulley

£194.10
Add to Cart

Forge Motorsport Supercharger Reduction Pulley and replacement drive belt.


  • Manufactured in house from stainless steel billet to exact tolerances
  • 9% reduction from OEM pulley
  • Supplied with genuine Audi replacement drive belt


Vehicle Fitment

  • Audi S4 3.0 TFSI
  • Audi S5 3.0 TFSI
  • Audi A6 3.0 TFSI 
  • Audi A7 3.0 TFSI

This product is not suitable for use with the stock engine management software

Merc Racing Air to water high capacity heat exchanger V3 for Audi S4,S5

  • Vehicle Model : S4 B8
£635.00
Add to Cart

* * New upgraded Version 3 * *


Merc Racing unique patented design uses the entire area of these vehicles to provide you with excellent cooling capacity, higher water volume, and amazing results.

This updated design allows for water to stay on the cooling stage longer and dissipate heat longer than other normal single and dual-pass systems. Our multiple-pass system provides a slower temperature rise and faster recovery.



  • High-density fin core for excellent heat dissipation.
  • Purges all air as it runs.
  • Bleed port included for assisting air removal during installation.
  • Durable black satin/matte coating finish on end tanks for long-life durability and resistance to road debris, great finish, easy to clean, corrosion resistance, and long life.
  • All Aluminum hand tig welded construction
  • Side Mounting brackets and bolts for crash bar install – Included
  • Self-tapping screws for mounting included
  • 3/4″ Tubes
  • Dimensions: W 25″ x H 17.5″ x D 2.4″
  • Proven to be one of the most efficient heat exchangers in the market


Price includes fitting kit (different kits for B8 and B8.5)


Vehicle suitability

Audi S4 B8 & B8.5

Audi S5 B8.5