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Supertech forged H-beam connecting rods set of 4 for BMW Mini B48 engine
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Supertech BMW/Mini B48 Connecting Rod Forged 4340 H-Beam ARP2000 C-C Length 148.3mm - Set of 4

Supertech
SPTCR-MINB48-H148.3-4
1037721245510
Connecting Rods - 4Cyl
Out of stock
$ 1,148.02 $ 918.68

SKU: CR-MINB48-H148.3-4 | UPC: 1037721245510

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

Request For Information

Have questions about Supertech BMW/Mini B48 Connecting Rod Forged 4340 H-Beam ARP2000 C-C Length 148.3mm - Set of 4? Fill out the form below and we'll get back to you by the next business day.
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