Boostline Connecting Rods for Acura RSX Type S K20A K20A2 K20Z1 Engines 

Part # HN5472-866

Boostline Honda K Series Connecting Rod Set, 139.00 mm Length, 22.00 mm Pin, 48.00 mm Journal, 3/8 in. ARP 2000 Bolts, 4340 Steel, Patented Three-Pocket Design, Set of 4.

BoostLine connecting rods are designed and built for the stressful demands of high-powered, forced induction and nitrous engines. Whether you’re building a boosted K-series, a track-ready Volkswagen, or a sneaky SRT4, BoostLine connecting rods have been proven in import and domestic four-cylinder engines confidently pushing 1,000HP+. BoostLine rods are forged from premium 4340 steel and utilize a patented, three-pocket design, maximizing strength while minimizing rotating weight. This revolutionary design dramatically improves each rods’ big-end stability under tensile loads and provides a 60% improvement in bending strength and 20% stress reduction in tension compared to H-beam designs, benefits crucial to durability in four-digit-horsepower engines. Each rod is equipped standard with industry leading ARP hardware and is subject to a 26-point, CMM inspection with all critical dimensions provided via an inspection card included with every set of rods. BoostLine connecting rods are the complete package for every performance build, from powerful projects to all-out race cars.

  • Purpose-Built For Boost High Boost and Nitrous Honda K20A Applications
  • Forged From Ultra-Strong 4340 Steel
  • Patented Three-Pocket Design
  • Capable of 1000+ HP
  • 3/8 x 1.600 in. ARP 2000 Fasteners
  • High Quality APMCO Bronze Pin Bushing
  • 26 Point Detailed CMM Inspection Report Included
Rod Type - 

I-Beam

Material -    

Forged 4340 Steel

Center To Center Length -  

139.00 MM

Pin End Bore - 

22.00 MM

Journal Size - 

48.00 MM

Main Bearing Bore Diameter - 

51.014 MM

Big End Width - 

19.86 MM

Wrist Pin Journal Bushing Width - 

19.86 MM

Bolt Part Number - 

BT61501-S

Bolt Diameter - 

3/8 IN



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  • Original outbound shipping charges are non refundable.