Multiquip 2842351307 Piston Ring Set 0.50 Oversize - OEM Replacement Part

This oversize piston ring set restores compression and engine performance in Multiquip rammer engines that have been rebored 0.50mm beyond standard specifications. When cylinder wear exceeds service limits, the engine requires machining and installation of oversize piston rings to maintain the 2.4 HP output at 3,600 RPM specified for these tamping rammers. Proper ring seal is critical for maintaining the 600-695 blows per minute impact rate and 1,650-2,250 lbs. per blow compaction force that defines rammer performance.

The MT55F and MTR40F/MTR40SF rammers utilize air-cooled 4-stroke single cylinder engines with 51mm bore and require precise ring-to-cylinder clearances for optimal compression. Loss of compression results in reduced impact force, difficulty engaging the automatic centrifugal clutch, and inability to maintain the factory-set 3,600 RPM operating speed. This 0.50mm oversize ring set is engineered specifically for engines that have been professionally rebored to restore original compression ratios.

Compatible with the following Multiquip rammer models:

• MT55F
• MTR40F
• MTR40SF

Genuine Multiquip OEM part, sold by an authorized dealer.