DEI

DEI

Design Engineering, Inc.™ (DEI) are the foremost suppliers of sound management and thermal tuning products for performance racers, street performance enthusiasts, and hobbyists alike.

In addition to supplying the performance aftermarket with a range of thermal tuning products, Design Engineering caters to the needs of the marine, powersports, industrial and commercial industry markets the world over with great products such as the Boom Mat, Water Wetter and Reflective tape and shields.


Price Match Guarantee!
If you find any DEI product cheaper anywhere else, call us on 01727 827717 and we'll price match for you. 
Terms: Price matches may only be honored on identical items. We reserve the right to disallow any price match as we see fit.

HT Silicone Coating
The HT Silicone Coating from DEI is recommended for use with DEI non-Titanium exhaust wraps, HT Silicone Coating penetrates, seals and protects as well as helping to extend the lifespan of exhaust ..
The HT Silicone Coating from DEI is recommended for use with DEI...
£19.45 Ex Tax: £16.21
Motorcycle Exhaust Pipe Wrap Kit
An extremely simple and totally effective way to control heat, gain protection from serious leg burns and improve the exhaust performance. These pipe wrap kits contain everything needed to wrap a s..
An extremely simple and totally effective way to control heat, g...
£115.87 Ex Tax: £96.56
Protect-A-Boot & Wire 2 cylinder kit
Each 2 cylinder Protect a boot and wire kit includes everything needed to protect spark plug boots and wires from harmful under hood heat. Colour matched Protect-A-Bootsâ„¢, Protect-AWireâ„¢ and Hi..
Each 2 cylinder Protect a boot and wire kit includes everything ...
£39.46 Ex Tax: £32.88
Protect-A-Boot & Wire 8 cylinder kit
Each 8 cylinder protect a boot and wire kit includes everything needed to protect spark plug boots and wires from harmful under hood heat. Colour matched Protect-A-Bootsâ„¢, Protect-AWireâ„¢ and Hi..
Each 8 cylinder protect a boot and wire kit includes everything ...
£157.72 Ex Tax: £131.43
Protect-A-Boot 2 pack
The 2 pack of DEI Protect-A-Boots are made from a high temperature resistant glass fibre material and treated with a proprietary coating, Protect-A-Boots provide spark plug boot and wire protection..
The 2 pack of DEI Protect-A-Boots are made from a high temperatu...
£29.90 Ex Tax: £24.92
Protect-A-Boot 8 pack
The 8 pack of DEI Protect-A-Boots are made from a high temperature resistant glass fibre material and treated with a proprietary coating, Protect-A-Boots provide spark plug boot and wire protection..
The 8 pack of DEI Protect-A-Boots are made from a high temperatu...
£114.12 Ex Tax: £95.10
Protect-A-Boot Silver XL 8"
The DEI Silver Protect-A-Boots in XL are made from a high temperature resistant glass fibre material and treated with a proprietary coating, Protect-A-Boots provide spark plug boot and wire pr..
The DEI Silver Protect-A-Boots in XL are made from a high t...
£31.25 Ex Tax: £26.04
Protect-A-Wire 2 cylinder kit
The 2 cylinder DEI Protect a wire kit protects expensive spark plug wire sets from potential burning, cracking, and hardening typically caused by severe under hood heat. Easily installs on wir..
The 2 cylinder DEI Protect a wire kit protects expensive sp...
£18.36 Ex Tax: £15.30
Protect-A-Wire 8 cylinder kit
The 8 cylinder DEI Protect a wire kit protects expensive spark plug wire sets from potential burning, cracking, and hardening typically caused by severe under hood heat. Easily installs on wire by ..
The 8 cylinder DEI Protect a wire kit protects expensive spark p...
£67.74 Ex Tax: £56.45
Radiator Relief
DEI Water Wetter Radiator Relief in 16oz bottles for petrol or diesel engines at CAM Auto is formulated with a corrosion inhibitor that reduces mineral deposits. This is the first additive tha..
DEI Water Wetter Radiator Relief in 16oz bottles for petrol...
£15.52 Ex Tax: £12.93
Radiator Relief Flush
Removes rust deposits Dissolves oily residue Restores cooling system efficiency Simple to use 100% biodegradable ..
Removes rust deposits Dissolves oily residue Res...
£15.52 Ex Tax: £12.93
Reflect-a-Cool Sheet
Reflect-A-Cool Sheet can be trimmed to fit just about any shape. Just measure, trim, face reflective side towards source of radiant heat and remove self-adhesive backing. It™s that easy. ..
Reflect-A-Cool Sheet can be trimmed to fit just about any shape....
£17.81 Ex Tax: £14.84
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