Cylinder Schmitt 50cc 38mm 42mm stroke moped 25km/h Sachs 504 / 505 / Hercules Prima

Cylinder kit schmitt 38mm 25 km/h moped version (Sachs 504 / 505 engine)

The Schmitt 38mm cylinder kit was specially developed for mopeds with Sachs 504 and 505 engines, such as Hercules Prima, KTM Pony and Hobby. With a stroke of 42mm, it achieves a real displacement of 48cc and is ideal for mopeds that are limited to a speed of 25 km/h.

OEM no. for comparison: 0213 146 280

original design and high quality

This cylinder kit is a completely new development with a true-to-original look and a straight connection to the intake manifold. Unlike many replica cylinders, Schmitt has focused on delivering top-quality, modern manufacturing while preserving the classic look. For best performance, Schmitt recommends pairing this cylinder with an 85/10 moped carburetor.

• Original timing and port geometry: Delivers the same engine performance as the original part.
• Die-Cast Production: Provides a high-quality surface finish.
• 3mm cast iron bushing: Precisely manufactured for durability, can be rebuilt several times and has a very long product life.
• Splash-proof connection: Includes the original splash-proof connection with an O-ring seal.

High-performance piston

The piston included in the kit is made of a durable aluminum alloy with 18% silicon content and has the original profile. This provides maximum durability, exceptional emergency running properties, and optimal performance during the break-in phase. The piston is enhanced with two rings of different thicknesses for smooth operation, as found in original parts. A molybdenum disulfide coating further supports the piston’s glide properties during the initial break-in period.

Scope of delivery Schmitt cylinder OEM style

• Cylinder with 38mm bore
• Piston with piston rings, piston pin with clips
• Cylinder base gasket
• Blind plug for decompression

Schmitt cylinder for Sachs 504 / 504 - Suitable models

HERCULES

• Prima 3S/M5/M5/5/5S/5N/6 (Sachs 505/2)
• M1/M2/M3/2N (Sachs 504)
• Prima 2S/M4/4/4S/4N (Sachs 505/1)
• Prima 4SL/5SL (Sachs 505/1-505/2)
• Jogging (Sachs 505/2)
• MX1 (Sachs 505/2)
• City Bike C1 C3

SACHS

• 504
• 505

KTM

• Hobby/Foxi/505/L/LS (Sachs 504/505) 1974-
• Pony/505/S/SS/SL/SB/Cross (Sachs 505)

Rixe

• High Sport 1976- (Sachs 505/2B)
• Libelle FT/FTH/GTH 1973-1975 (Sachs 504/1)
• Libelle GTH 1976- (Sachs 505/2B)
• Champion FT/FTH 1976- (Sachs 505/1B-2B)
• Tourismo E/EL/ELS 1976- (Sachs 505/2B)

Sparta

• Buddy/Lucky (Sachs 504/1A NL)
• Tour 505 (Sachs 505/1)
• Easy (Sachs 505/1-505/2)