Clevite MS-2202A-.25MM High Performance Main Bearing Set Oversize

The Clevite MS-2202A-.25MM is a precision-engineered main bearing set designed for high-performance and racing applications. This oversize bearing set (.25mm undersize) provides superior lubrication and durability for engines operating under extreme conditions.

Key Features:

• TriMetal construction with steel backing for maximum strength and durability
• Optimized 180-degree upper shell grooving design for ideal oil film development
• High crush design ensures maximum bearing retention
• Reduced overlay thickness prevents overlay fatigue and "hen tracking"
• Enlarged chamfers provide greater crankshaft fillet clearance
• Non-flash plated backing for improved seating characteristics

Engineering Design:

Clevite main bearings feature an optimized groove design based on extensive performance testing. The 180-degree groove in the upper main shell provides the best overall bearing performance by maintaining optimal oil film thickness while still supplying adequate oil to connecting rod bearings. The ungrooved lower shells allow for maximum oil film development, providing greater load capacity and improved bearing life under high-stress conditions.

Applications:

Ideal for performance street engines, circle track racing, drag racing, and marine applications where reliability and durability are critical. Compatible with crankshafts featuring oversize fillets and engines operating in medium to high RPM ranges. This bearing set is designed for engines requiring .25mm undersize bearings due to crankshaft machining or wear.

Technical Note:

Clevite performance bearings are available in multiple series (P, H, K, V, and M-Series), each engineered for specific applications and operating conditions. Proper bearing selection depends on factors including RPM range, load conditions, crankshaft geometry, and observed bearing wear patterns. Contact patterns should ideally cover 2/3 to 3/4 of the bearing surface for optimal performance.