Spool Holden / Nissan RB30 X300 Extreme 300M Conrods with ARP 7/16 Bolts
Spool Nissan SR20 X300 Extreme 300M Conrods with ARP 7/16 Bolts
** New Product **
Available from July 2026
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Spool X300 Extreme 300M I-Beam Conrods for Nissan SR20
The Spool X300 Extreme series represents the next generation of high-performance connecting rod technology, building on the proven success of the Spool Drag Pro range to deliver even greater strength, durability and reliability for serious SR20 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 for extreme cylinder pressures and high-RPM applications, making it the ideal choice for engines producing 1,500 horsepower and beyond.
Designed as a direct-fit upgrade for all Nissan SR20 engines, the X300 combines increased beam strength, reinforced pin-end design and larger fasteners to provide exceptional durability in the most demanding street, drag racing and circuit racing environments.
Specifications
- Application: Nissan SR20 Engines
- Suitable for SR20 Naturally Aspirated, Turbocharged and Stroker combinations
- 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 1,500+ 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
Whether you're building a high-powered street car, a dedicated drag car or a professional motorsport engine, the Spool X300 Extreme 300M Conrod delivers the strength and reliability required when pushing the SR20 platform to its limits.
Note: Bearings are not included.
| Product Name | Spool Nissan SR20 X300 Extreme 300M Conrods with ARP 7/16 Bolts |
|---|---|
| Brands | Spool |
| Engine | SR20, SR20VE/VET |
| Make | Nissan |
Delivery & Freight
We are an Australian-based company that ships items nationally and internationally, usually within 48 hours of receiving your order. High-value items shipped internationally are sent via DHL Express, while lower-value items are sent via Australia Post Express unless otherwise instructed.
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Disclaimer:
Product images are for description purposes only. Actual product may vary.
Shipping calculations available at checkout.
If you are unsure, get in touch by emailing [email protected], messaging us on Facebook, or phoning us at +61 7 5645 1333 (8am to 2pm AET).
