4x Ultimate I-Beam connecting rods for Subaru EJ 20,25 engines.
PPM Ultimate I-Beam is designed for the applications where rod strength is the number one concern rated in excess of 300++HP per cylinder.
I-Beam rods minimized the total weight.
1. 100% premium AISI4340 forged billet steel
2. Strict forge and heat treatment processed forgings, hardness of 36-42 HR C.
3. Aluminium/Silicon/Bronz alloy bushing
4. 3D software re-designed critical C-bore area, special CNC machining ensure smooth connection and free of sharp edge, significantly improved strength
5. Standard equipped with the best ARP Cust. Age 625+ bolts (260,000PSI)
6. Accurate sized and edge chamfered dowel sleeve for easy and accurate re-assembling.
7. Sunnen hone solution for all big bore and pin bore finishing.
8. Enlarged mating surface increase mating area strength significantly and grinded mating surface makes re-assembling job accurate and easy.
9. Thread-end is blinded to same length as bolt
10. Radial grooved bushing crates an oil reservoir within PE improving pin lubrication.
11. Cap is designed thicker than beam to increase strength.