Darton MID Sleeves for 4B11 Evo X (800-160) S90 Part Number: Diagram: MZ311987 -

Part Number: Diagram: MZ311987 -

Part Number: Heat Range: Thread: 50003-M45iL-1 NGK #9 14mm x 26

Exhaust Valve Specs: Stem Diameter O / A Length Tip Length Underhead Angle Radius Margin Seat Width Top of Head 5

Install is about 3-4 hours time

Darton MID Sleeves for 4B11 Evo X (800-160) S90 Part Number: Diagram: MZ311987 -Darton iron MID wet sleeves for the 4B11 Evo X come as a 86mm bore, and can be bored out to 90mm. Includes 4 sleeves with lube and orings as pictured. Vehicle Fitment: 2008 2015 Evolution X 4B11 Features: Improved block integral strength Improved cooling "Wet sleeve" replace ability Increased horsepower output potential Superior oil and compression control Street or strip application Kits can be installed by your local machine shop Full installation