DEI: Knitted Exhaust Sleeves now available in a smaller diameter to fit 3-inch pipes

Less is More

Users asked and Design Engineering, Inc. delivered. DEI’s popular Titanium Knitted Sleeves are now available in a smaller size to fit 3″ to 3.5″ (# 10042) OD exhaust and turbo pipes, up to 36″ in length.

dei knitted sleeve

Previously available in 12” and 24″ lengths to fit 4″ to 5″ pipes, the sleeves have a max temperature rating of 1800°F and a continuous rating of 1382°F. They can be cut to fit any application, and are also available in special-order custom lengths.

“Users have found many uses for our Titanium Knitted Sleeves, and some began asking for a smaller diameter to fit certain turbo downpipes,” says Mike Buca of DEI. “These versatile sleeves can expand up to 3.5-inch in diameter, offering heat protection for a variety of street and race machines.”

Designed to protect vulnerable components and prevent heat from transferring into vehicle cabins, the sleeves are made from a thick basalt material that expands over sensor bungs and flanges and can be rolled at the ends. Kits include locking ties and tool to secure the sleeves to the pipes.

The sleeves have passed a variety of flammability, burn and salt spray tests for reliability, offering complete protection for vulnerable components and bodywork.


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Design Engineering Inc.






(440) 930-7940


604 Moore Road

Avon Lake, OH 44012

ABOUT Design Engineering Inc.®

Design Engineering (DEI), located in Avon Lake, OH, specializes in the development of thermal and acoustic performance products for the for the automotive and powersports industries. DEI also makes cryogenic intake systems and related accessories under the CryO2 brand, acoustical insulation, and sound-deadening products under the popular Boom Mat brand, as well as a full line of performance coolant additives under the brand Radiator Relief.