Wrist Pin Lock - Wire Lock - 21 mm Wrist Pin Diameter - 0.049 in Thick - Steel - Pair

Wiseco 21mm Round Wire Pin Locks (Pair) Retaining Clip Shelf Stock

Wiseco offers a range of performance accessories to help you get your performance rebuild done right, including hour meters, honing brushes, ring compressors, piston components, carburetor jets, and more.

Additional Information

Wiseco, Wrist Pin Retainer Set, Round Wire Lock, 21.00 mm

Part Type

Engine Piston Wrist Pin Retainer

Product Overview

We have a few choices when it comes to choosing a piston pin. 5115 Material pins are chromium alloy and steel case hardened to 58-64 Rockwell C designed for normal wear and tear. 52100 Material Pins are high carbon chromium-bearing steel made of aircraft quality alloy and case hardened to 54-56 Rockwell C for high load capacity. 9310 Material Pins are high quality low carbon and are case hardened to 59-63 Rockwell C for turbo or nitrous applications.

*5115 Material Pin*
• Standard grade chromium alloy steel
• Case hardened to 58-64 Rockwell C
• Ground to a surface finish of .15 Ra or better
• Designed to withstand the normal wear and tear of an aftermarket engine

*52100 Material Pin*
• High carbon, chromium-bearing steel
• Aircraft quality alloy
• Case hardened to 54-56 Rockwell C
• Through hardened
• Ground to a fine finish
• Designed for high load capacity
• Designed for outstanding wear and abrasion resistance

*9310 Material Pin*
• High quality, low carbon, case hardened steel
• Case hardened to 59-63 Rockwell C
• Ground to a superfinish (.025 Ra or better)
• Designed for use in applications which require high surface strength combined with high core toughness
• Excellent to use in applications where high contact stress is combined with high shock and impact loading, such as turbo / nitrous applications

• Let Wiseco help you get your rebuild done right with its proven performance accessories!

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Product Details

Reference Information

Wrist Pin Retainer, CW Style, for use on Honda®, TRX450R, 4-Cycle, Pair

These Wiseco piston lock rings are designed for floating-pin pistons. Engines produced with press-fit pins can be converted to the "floating" type, providing that the piston has provisions for a lock ring retainer. Floating pins are preferred by most serious engine builders.