996 - 997 GT3 - 991.1 GT3 Cup 4.1 - 4.3 liter piston and cylinder set for Porsche 911

4.1 - 4.3 Liter AMS conversion kit 13.8 : 1 for 997 GT3 / GT3 RS / 991.1 Cup Street and Race !

• - forged pistons 106 mm
• - 23mm piston pin, check existing connecting rods or replace with our Carillo connecting rod set
• - mirrored valve pockets
• - offset (left hanging, right standing)
• - compression approx. 13.8 :1
• - Made in Germany by Albert Motorsport

Water tanks and engine housings must be spindled !

If sports camshafts are used, the pockets on the intake side may need to be deepened.
We are happy to offer this service.

You can also send us the engine housing and both water tanks so that we can carry out this work.
Alternatively, there is a set of reinforced water tanks, which also need to be drilled out.

When installed in a 4.0L RS engine with 80.4
stroke crankshaft, the displacement is 4.3 liters

These pistons have a higher compression and must
be operated with Superplus, but the performance is
significantly higher!