ATI Performance : Clutch Hub Assembly

ATI Super Pulley Clutch Hub Assembly for High Horsepower Supercharged Engines

Here is the latest from the ATI site.

ATI Performance Products is proud to introduce its new Super Pulley for large displacement superchargers and high horsepower race engines! The new Super Pulley (Part # 916216) accommodates the customer’s bolt on pulley as small as 50 teeth by 8mm HTD. ATI’s Superior Sprag Technology releases the blower whenever it is spinning faster than engine RPM – virtually eliminating belt failures. “

See the YouTube video below to see the assembly in action!

To place an order call us or email details.

total seal piston rings

Total Seal M2 Piston Ring

Total Seal Piston Rings is proud to welcome a new product to it’s portfolio.

M2 Tool Steel top rings: They offer the ultimate in durability over any other material commonly used in piston ring manufacturing.

Click to see the M2 pdf on the Total Seal website.

Total Seal distributed by Performance Unlimited

Performance Unlimited distribute Total Seal piston rings, so call us on 01904 489332 to place your order


Scat Crankshafts – 4340 billet Subaru Crankshaft Video

Excellent viewing! Enjoy….

Time lapse video of EJ25 engine build using a SCAT 4340 billet Subaru crankshaft and 4340 forged H-Beam rods

Click to learn more about SCAT


Dart Heads – SHP Small Block Chevy Cylinder Heads

SHP Small Block Chevy Cylinder Heads from Dart Heads offer weight savings benefits of an aluminum head and a low cost option for a street performance engine.

  • Made using A356-T6 aluminum
  • Compatible with most off the shelf parts - ring us if you need to check this
  • Bolt on compatibility: Standard valve angle and spacing
  • Multi-angle intake seats and radiused exhaust seats substantially increase air/fuel flow
  • Unleaded petrol compatible
  • Machined for 1.250 or 1.437 diameter valve springs.
  • Straight spark plug configuration

To order call our team on 01904 489332 or email

SHP Small Block Chevy Cylinder Heads

Dart Heads Sales Team

Indianapolis 500 Live Streaming

The 98th Indianapolis 500 is underway – watch the action with live streaming!




Brodix Heads | FAQ

If you have any queries about Brodix Heads, check out their Frequently Asked Questions Page.

We are official UK distributors of Brodix Heads Blocks and Manifolds so call us to place your order.

Brodix SBC Block


Manley Valves and Spring – NHRA 2014

Watch Jonnie Lindberg at the 2014 NHRA 4 Wide Nationals Charlotte. Powered by Manley valves and springs!

Call Performance Unlimited to order Manley Products.

CP Pistons logo

CP Pistons – New FAQ Page

Just to let you all know that CP Pistons have a newly updated  frequently asked questions page.

From technical questions, such as “how do I cut ring grooves” to “where can I get more stickers” its all there.

It is worth hopping over to check it out. Very useful.


CP Pistons logo

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