DSS Racing 1-6653-3915 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)
• Ring Set Required: RS-DM300-3915
• Ring Series: DM300
• Fits Base Engine: 4.0
• Compression Ratio: 52cc-9.37, 55cc-9.07, 58cc-8.80
• Calculated Zero Deck: 9.437
• Compression Height: 1.592 in.
• Rod Length: 6.125 in.
• Stroke: 3.44 in. (OEM Stroke)
• Pin Locking Rings Included: Yes
• Wrist Pin Included: Yes
• Oil Rail Support Ring Included: N/A
• With Rings Without Rings: Without Rings
• Total Valve Reliefs: 0