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Spiral Retaining Ring Installation Tips:1. The spiral retainer comes unsprung. KB suggests that you slightly spring the retainer about 1/2in.-3/4in. by grasping both ends and stretching it. This will help with installation.2. Installation of the retaining ring. Place the end of the retaining ring into the retaining ring groove in the piston. Using a small…
Features & Benefits:-* ID # 3714* Bore = 3.498in. * Stroke = 4.250in.* Fully CNC machined* Balanced to +/- 1 gram* Double forced pin oilers* Forged from high strength 2618 alloy* Designed for maximum performance, horsepower and reliability* Complete kit includes two pistons, ring sets, wrist pins and clipsTech Tips:-* Suggested additional purchase – top…
Features & Benefits:-* Bore = 3.498in. * Stroke = 4.250in.* Hypereutectic Alloy is a cast 16% silicon content material.* Perfect for air cooled engines.* Low thermal expansion rate = tighter piston-to-cylinder clearance.* Complete kit includes: two pistons, rings, wrist pins and clips.* Replaces OEM # 21990-80Tech Tips:-* 8.3:1 Compression Ratio with 117cc Head Chamber Volume.*…
Features & Benefits:-* Bore = 3.538in.* Stroke = 4.250in.* Hypereutectic Alloy is a cast 16% silicon content material.* Perfect for air cooled engines.* Low thermal expansion rate = tighter piston-to-cylinder clearance.* Complete kit includes: two pistons, rings, wrist pins and clips.Tech Tips:-* 8.3:1 Compression Ratio with 117cc Head Chamber Volume.* Follow Ring End Gap &…
Features & Benefits:-* ID # 3713* Bore = 3.528in. * Stroke = 4.250in.* Fully CNC machined* Balanced to +/- 1 gram* Double forced pin oilers* Forged from high strength 2618 alloy* Designed for maximum performance, horsepower and reliability* Complete kit includes two pistons, ring sets, wrist pins and clipsTech Tips:-* Suggested additional purchase – top…
Features & Benefits:-* Bore = 3.528in.* Stroke = 4.250in.* Hypereutectic Alloy is a cast 16% silicon content material.* Perfect for air cooled engines.* Low thermal expansion rate = tighter piston-to-cylinder clearance.* Complete kit includes: two pistons, rings, wrist pins and clips.* Replaces OEM # 21993-80Tech Tips:-* 8.3:1 Compression Ratio with 117cc Head Chamber Volume.* Follow…
Features & Benefits:-* ID # 3717* Bore = 3.518in. * Stroke = 4.250in.* Fully CNC machined* Balanced to +/- 1 gram* Double forced pin oilers* Forged from high strength 2618 alloy* Designed for maximum performance, horsepower and reliability* Complete kit includes two pistons, ring sets, wrist pins and clipsTech Tips:-* Suggested additional purchase – top…
Features & Benefits:-* Bore = 3.518in. * Stroke = 4.250in.* Hypereutectic Alloy is a cast 16% silicon content material.* Perfect for air cooled engines.* Low thermal expansion rate = tighter piston-to-cylinder clearance.* Complete kit includes: two pistons, rings, wrist pins and clips.* Replaces OEM # 21992-80Tech Tips:-* 8.3:1 Compression Ratio with 117cc Head Chamber Volume.*…
Features & Benefits:-* Bore = 3.508in. * Stroke = 4.250in.* Hypereutectic Alloy is a cast 16% silicon content material* Perfect for air cooled engines* Low thermal expansion rate = tighter piston-to-cylinder clearance.* Complete kit includes: two pistons, rings, wrist pins and clips.* Replaces OEM # 21991-80Tech Tips:-* 8.3:1 Compression Ratio with 117cc Head Chamber Volume.*…
Features & Benefits:-* Bore = 3.437in. * Stroke = 3.969in.* Hypereutectic Alloy is a cast 16% silicon content material.* Perfect for air cooled engines.* Low thermal expansion rate = tighter piston-to-cylinder clearance.* Complete kit includes: two pistons, rings, wrist pins and clips.* Replaces OEM # 22141-55B* Replaces OEM # 22141-74ATech Tips:-* Follow Ring End Gap…
Features & Benefits:-* ID # 2537* Bore = 3.437in. * Stroke = 3.968in.* Fully CNC machined* Balanced to +/- 1 gram* Double forced pin oilers* Forged from high strength 2618 alloy* Designed for maximum performance, horsepower and reliability* Complete kit includes two pistons, ring sets, wrist pins and clipsTech Tips:-* Suggested additional purchase – top…
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