Sachs Moped 504/505
No. 922, with 2 piston rings, up to 1989, comparison no. 0286.378.005, piston bolts 12 mm

Zündapp CS25, Hai 50/25, Z. 10-30, Z.20/40, C50 Sport, GTS50, Z.25/50
No. 774, comparison no. 278.02.729, piston bolts 12 mm

Sachs, 50 S aluminum cylinder
No. 857 L, reference no. 0286.344.111, piston bolts 14 mm

Sachs Moped 505
No. 987, comparison no. 0286.378.051, piston bolts 12 mm

piston bolts: 14mm
Kreidler RS 50

Sachs Moped 505/2
No. 1271, with one piston ring from 1989, comparison no. 0286.378.126, piston bolts 12 mm

PuchMaxi N-S
No. 763, comparison no. 349.1.10.006.9, piston bolts 12 mm

complete