DSS Racing K1-6620-4165 Features:

• 6 additional areas of CNC milling for weight reduction in non critical areas
• Thinner Ring Grooves Maximize Critical Ring Land Strength
• Larger CNC Machined Valve Reliefs for More Aggressive Head & Cam Combinations
• Heavy-Duty Piston Pins
• Double True Arc Pin Locks, Provide Redundancy
• Precision CNC Finished Pin Bores
• Drilled Forced Wrist Pin Oiling
• Drilled Bottom Ring Land Intersecting Oil Drain Backs
• Advanced Profile Precision Diamond-Turned Skirts
• Boost and NOS Ready! (Moderate to High Levels)
• Includes matching DSS Racing Ductile Moly ring set.
• Ring Set Required: RS-DM400-4165
• Ring Series: DM400
• Fits Base Engine: 401
• Compression Ratio: 50cc-14.26, 54cc-13.46, 58cc-12.75
• Calculated Zero Deck: 9.198
• Compression Height: 1.5 in.
• Rod Length: 5.858 in.
• Stroke: 3.68 in. (OEM Stroke)
• Pin Locking Rings Included: Yes
• Wrist Pin Included: Yes
• Oil Rail Support Ring Included: N/A
• With Rings Without Rings: With Rings
• Total Valve Reliefs: 2