Mazworx Stage 4 Short Block SR20 RWD

Building upon the proven foundation of the Stage 3 SR20 Short Block, the Mazworx Stage 4 Short Block SR20 RWD is engineered for exceptional strength and performance, making it capable of supporting over 1000 horsepower. This advanced short block features a 91mm stroker rotating assembly, crafted to meet the demands of high-power applications.

Key Features

• Mazworx SR20 91mm Billet Crankshaft: Designed for durability and precision balance.
• Proprietary Mazworx Sleeving with Darton Sleeves: Enhances cylinder wall strength for increased reliability.
• Step Deck Block: Provides added rigidity and strength to handle high torque loads.
• Mazworx SR20 Billet Main Caps with 1/2″ Stud Kit: Ensures crankshaft stability under extreme conditions.
• Mazworx Billet Girdle: Reinforces the bottom end for additional durability.
• Custom Heavy Duty CP Pistons: Engineered for high-performance use.
• .250″ Wall Thickness 9310 Upgraded Wrist Pins: Designed to withstand increased stress.
• SR20 HD Carrillo Pro-H Rods with 7/16″ CARR Bolts: High-strength connecting rods for reliability at high RPMs.
• ACL Racing 19mm Rod and Main Bearings: Provides superior wear resistance and durability.
• New VE Oil Pump: Ensures consistent oil flow under high-performance conditions.
• 1/2″ Head and Main Stud Machining: Prepped for enhanced bolt retention.
• Mazworx Front Oil Squirter: Improves piston cooling and engine longevity.
• Oil Groove Machining: Optimizes oil flow throughout the block.
• New Oil and Freeze Plugs: Standard hardware replacement for reliability.
• Block is 1/2 Filled with Hard Block Material: Increases block strength and rigidity.
• Prepped for VE Head Compatibility: Ready for use with VE cylinder heads.

Designed for Nissan chassis models S13, S14, and S15, this short block is ideal for enthusiasts seeking a robust foundation for high-output SR20 builds. Whether rebuilding or upgrading, the Mazworx Stage 4 short block is engineered to withstand the demands of racing and high-performance street applications.