BoostLine 5.090in Connecting Rod Set for Subaru FA20/FA20DIT, ARP 625+ - SB5090-866+

BoostLine SB5090-866+ is a set of 4 connecting rods for Subaru FA20/FA20DIT applications. Manufacturer data specifies a 5.090 in center-to-center length, 0.866 in wrist pin diameter, 50 mm crank journal diameter. This configuration uses ARP 625+ rod bolts in a 3/8 x 1.600 size. BoostLine standard-series rods use forged 4340 steel and the brand’s patented three-pocket design for demanding performance engine combinations. Listed weight with bolts is 614 g.

Key Features & Specs:

• Brand: BoostLine
• Series: BoostLine
• Product Type: Connecting Rod Set
• Engine Application: Subaru FA20/FA20DIT
• Quantity: 4
• Material: Forged 4340 steel
• Center-to-Center Length: 5.090 in
• Wrist Pin Diameter: 0.866 in
• Crank Journal Diameter: 50 mm
• Big End Bore: 2.0871 in
• Big End Width: 0.8429 in
• Small End Width: 0.843 in
• Rod Bolt Material: ARP 625+
• Rod Bolt Size: 3/8 x 1.600
• Rod Bolt Part Number: BT61601-625
• Weight With Bolts: 614 g
• Manufacturer Part Number: SB5090-866+
• UPC: 00193564266194

Fitment:

• Subaru FA20/FA20DIT engine applications

Series Description: BoostLine connecting rods are forged from 4340 steel and use the brand’s patented three-pocket beam design, developed to support high cylinder-pressure performance applications while controlling rotating mass. The standard BoostLine series is positioned for demanding forced-induction, nitrous, street-performance, and racing combinations. Application-specific ARP fasteners and dimensional CMM inspection are part of the product program; exact dimensions and bolt grade vary by part number.