Supertech Forged 4340 H-Beam Connecting Rods – BMW/Mini B48 2.0T (Set of 4)
The Supertech CR-MINB48-H148.3-4 is the #1 selling performance connecting rod for every B48-powered BMW & Mini (F54/F55/F56/F57/F60/G20/G30/X1/X2). Forged from 4340 EN24 aircraft-grade steel, H-beam design, and fitted with ARP2000 3/8" bolts – rated for 900+ hp while maintaining perfect balance and durability. Direct drop-in replacement with 148.3 mm center-to-center length.
Key Features
- 900+ HP Rated – proven in 1000+ hp B48 race engines
- Forged 4340 H-Beam – maximum strength-to-weight ratio
- ARP2000 3/8" Bolts – 220,000 psi tensile strength
- Precision Balanced Set – within ±1 gram end-to-end
- Made in the USA – lifetime warranty against defects
Specifications
| Specification | Detail |
|---|---|
| Part Number | CR-MINB48-H148.3-4 |
| Quantity | Set of 4 rods |
| C-C Length | 148.30 mm (OEM spec) |
| Big End Journal | 50.00 mm |
| Pin Diameter | 22 mm (floating) |
| Bolt Type | ARP2000 3/8" |
| Rated Power | 900+ hp |
| Country of Origin | United States |
| Warranty | Lifetime against defects |
Product Notes
- Fits all B48 2.0T engines: Mini Cooper S/JCW (F54–F60), BMW X1/X2 28i, 230i, 330i, 430i, etc.
- Direct replacement no machining required
Installation Notes
- Engine disassembly required professional installation mandatory
- Recommended: ARP rod bolt stretch gauge & torque to 75 ft-lb with moly lube
- Clearance check required with stroker or aftermarket pistons
This Part Fits
| Brand | Models | Engine |
|---|---|---|
| Mini | F54/F55/F56/F57/F60 Cooper S & JCW | B48 |
| BMW | X1/X2 xDrive28i, 230i, 330i, 430i, etc. | B48 |
Why Choose Supertech?
- World leader in performance valve train & bottom-end components
- Every rod forged, machined, and balanced in the USA
- Chosen by every 800–1200 hp B48 record-holding build
Frequently Asked Questions
-
Q: Will these work with OEM pistons?
A: Yes, 100% drop-in with factory pistons and crank. -
Q: Do I need to balance the rotating assembly?
A: Supertech rods are balanced to ±1 g – usually no additional balancing needed. -
Q: ARP625+ bolts available?
A: Yes, upgrade to CR-MINB48-H148.3-4-625 for 1200+ hp.
Shipping & Handling
- Method: UPS/FedEx Ground
- Availability: In stock – ships same or next business day
- Packaging: Official Supertech foam-lined box
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