Spool Toyota 2JZ X300 Extreme 300M Conrods with ARP 7/16 Bolts

Spool X300 Extreme 300M I-Beam Conrods for Toyota 2JZ

The Spool X300 Extreme series represents the next evolution in high-performance connecting rod technology, building on the proven success of the Spool Drag Pro range to deliver exceptional strength, durability and reliability for the world's most demanding 2JZ builds.

Manufactured from premium aerospace-grade 300M alloy steel and fitted with genuine 7/16" ARP 2000 fasteners as standard, the X300 has been engineered to withstand extreme cylinder pressures and high-RPM operation, making it the ideal choice for engines producing 2,000 horsepower and beyond.

Designed as a direct-fit upgrade for all Toyota 2JZ engines, the X300 combines increased beam strength, reinforced pin-end design and larger fasteners to provide maximum durability in extreme horsepower applications.

Specifications

• Application: Toyota 2JZ-GE and 2JZ-GTE Engines

• I-Beam design

• Premium 300M alloy steel construction

• Genuine 7/16" ARP 2000 fasteners included as standard

• ARP L19 fastener upgrade available

• Weight: 590g with bolts

• Side oil squirters

• Direct-fit design with no machining required

Key Improvements

• Increased beam strength for extreme horsepower applications

• Reinforced fastener area for improved cap retention under high cylinder pressure

• Increased strength around the gudgeon pin area

• Larger 7/16" rod bolts for superior clamping force and reliability

• Designed to support 2,000+ horsepower engine combinations

Features

• Aerospace-grade 300M forged steel construction

• Two-piece precision forging design

• Dowelled caps for precise cap alignment and improved bearing housing integrity

• X-ray and sonic tested for material consistency

• Vacuum degassed material to remove impurities

• Quenched and heat treated for maximum strength and durability

• Shot peened for improved fatigue resistance

• 100% Magnaflux inspected

• Weight matched sets to within ±1 gram

• Side oil squirters for enhanced lubrication

• Designed to withstand extreme boost, RPM and cylinder pressure

The Toyota 2JZ has earned a reputation as one of the strongest production engines ever built. The Spool X300 Extreme takes that reputation to the next level, providing the strength and reliability required for the most demanding drag racing, roll racing, street and circuit applications.

Whether you're building a four-figure street car or a dedicated race engine targeting 2,000 horsepower and beyond, the X300 delivers the confidence needed when every pass counts.

Note: Bearings are not included.