Mahle upgrade 3,8l piston&cylinder 964/993 (11.3:1) 107mm, narrow rod

Bolt on torque and horsepower! 3.8L (102mm Bore) conversion with forged pistons and cylinders - up to 26KW (35PS) more - Compression 11.3: 1 - OEM Slip in, no modifications to the housing needed - Deep Valve Pockets - up to 2,1mm cam shafts Tech Tip: 964 Model (89-94) must modify the connecting rod (connecting rod eye like 993). Part number 000 300 207 . We strongly recommend Carrillo RSR 3.8 connecting rod FVD 103 975 03 . The Carrillo roads are already made for this conversion kit._x000B__x000B_Fits: C4S (96-98), C4 (95-98), C2S (96-98), C2 (94-98), CUP-RACE (90-93), Turbo-Look (91-94), RS (92-92), C4 (89-94), C2 (90-94)