Spool Subaru EJ25 Conrods
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All Spool Conrods come standard with ARP 2000 Fasteners.
These are a direct fit conrod for all Subaru EJ25 engines.
These conrods feature:
- High tensile 4340 forged steel
- 2 Piece forging
- Hardness of HRC36-42
- Dowelled caps for precision alignment
- X-RAY & Sonic tested
- Quenching and heat treated
- Shot peened
- 100% Magnafluxed
- Weight Matched Sets + - 1 gram
- Vacuum degassed to remove impurities.
No bearings are included.
Specifications:
Small End Pin Size: 23mm
Big End Tunnel Size: 55mm
We have customers making over 1000 RWHP with Spool Conrods, check out the project cars here.
| Product Name | Spool Subaru EJ25 Conrods |
|---|---|
| Brands | Spool |
| Engine | EJ25, EJ255, EJ255 WRX, EJ257, EJ257 WRX STI |
| Make | Subaru |
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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If you have issues calculating freight, please get in touch. We are happy to help.
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).
What bolts do these conrods use and how should I tighten them?
These rods use ARP conrod bolts, usually ARP2000 as standard with L19 or CA625+ available on some models. ARP2000 bolts are generally torqued to around 55 ft-lb for 3/8 inch and around 75 ft-lb for 7/16 inch when using ARP Ultra-Torque lube. L19 bolts must be tightened by stretch, not torque. Always refer to the latest ARP instructions for exact specifications.
Do these conrods have a horsepower rating or warranty?
No. Like other performance rods, they do not carry a horsepower or performance warranty. Spool warrants workmanship before installation, but once fitted, power handling depends entirely on machining, clearances, tuning, fuel, boost level and rpm.
Do the big end and small end need machining?
They often do. Crank journals and pin bores vary between engines, so your builder should measure the big end oil clearance and small end pin clearance and hone as required before assembly.
What is the material used for the Spool Subaru EJ25 conrods?
The Spool Subaru EJ25 conrods are made from high tensile 4340 forged steel, which provides excellent strength and durability for high-performance applications.
Are the Spool EJ25 conrods compatible with all EJ25 engine variants?
Yes, these conrods are a direct fit for all Subaru EJ25 engine variants, including EJ255, EJ255 WRX, EJ257, and EJ257 WRX STI.
What machining considerations should I be aware of when using these conrods?
While the Spool EJ25 conrods are designed for direct fitment, it is advisable to check the big-end and small-end sizes for any necessary honing to ensure proper clearances and fitment.
What is the significance of the dowelled caps on these conrods?
The dowelled caps on the Spool EJ25 conrods ensure precision alignment during assembly, which is crucial for maintaining consistent clearances and reducing the risk of failure under high-stress conditions.
Do I need to purchase bearings separately for these conrods?
Yes, the Spool EJ25 conrods do not come with bearings included, so you will need to source the appropriate bearings separately for your engine build.
