{"product_id":"manley-performance-pro-series-i-beam-connecting-rod-set-2015-2021-wrx","title":"Manley Performance Pro Series I-Beam Connecting Rod Set 2015-2021 WRX","description":"\u003ch3\u003eManley Performance Pro Series I-Beam Connecting Rod Set 2015-2021 WRX | Forged 4340 Steel | High-Strength Engine Internals\u003c\/h3\u003e\n\n\u003ch4\u003eOverview\u003c\/h4\u003e\n\u003cp\u003eThe Manley Performance Pro Series I-Beam Connecting Rod Set is engineered specifically for the 2015-2021 Subaru WRX, designed to handle high horsepower builds with precision and reliability. These connecting rods are a critical component in your engine’s rotating assembly, transferring the combustion forces from the pistons to the crankshaft. Ideal for enthusiasts pushing their WRX beyond stock power levels, this set supports builds targeting 1000+ horsepower, making it a solid choice for serious turbocharged applications.\u003c\/p\u003e\n\u003cp\u003eManley’s Turbo Tuff® I-Beam rods are crafted with meticulous attention to detail, utilizing forged 4340 steel to deliver exceptional strength and durability. The I-beam design balances weight and rigidity, optimizing performance without unnecessary mass. Manufactured with precision CNC processes and fitted with high-quality ARP 2000 rod bolts, these rods exemplify Manley’s commitment to quality and engineering excellence. Their NHRA legal certification on select SKUs further underscores their suitability for competitive motorsports.\u003c\/p\u003e\n\u003cp\u003eFor Subaru WRX owners, upgrading to Manley’s Pro Series rods means reinforcing the engine’s bottom end to withstand increased boost and power levels reliably. The precise dimensions and material choices ensure consistent performance and longevity, even under demanding track or street conditions. This connecting rod set is a foundational upgrade for anyone building a high-output WRX engine, providing peace of mind and enhanced durability.\u003c\/p\u003e\n\n\u003ch4\u003eFeatures \u0026amp; Specifications\u003c\/h4\u003e\n\u003cp\u003eThis Manley Performance Pro Series I-Beam Connecting Rod Set is engineered for the 2015-2021 Subaru WRX and features a 5.090-inch center-to-center length with forged 4340 steel construction. Designed for high horsepower applications, it delivers superior strength and durability for Subaru enthusiasts seeking reliable engine internals capable of supporting 1000+ HP builds.\u003c\/p\u003e\n\u003cul style=\"list-style:none;padding:0;margin:0;\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Manley Performance\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProduct:\u003c\/strong\u003e Pro Series I-Beam Connecting Rod Set\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 14431-4\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e 2015-2021 Subaru WRX\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Forged 4340 Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Natural Forged Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConstruction:\u003c\/strong\u003e Precision Forged I-Beam\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Made in USA\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCenter To Center Length:\u003c\/strong\u003e 5.090 in.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBig End Bore Diameter:\u003c\/strong\u003e 2.087 in.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePin Bore Diameter:\u003c\/strong\u003e 0.8671 in. (22mm Pin)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRod Bolt Material:\u003c\/strong\u003e ARP 2000\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApproximate Horsepower Rating:\u003c\/strong\u003e 1000+ HP\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConnecting Rod Type:\u003c\/strong\u003e I-Beam\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConnecting Rod Series:\u003c\/strong\u003e Pro Series Turbo Tuff®\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRod Quantity:\u003c\/strong\u003e Set of 4\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNHRA Legal Certification:\u003c\/strong\u003e Available on select SKUs\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eKey Benefits\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePerformance:\u003c\/strong\u003e Supports high horsepower builds over 1000 HP, ideal for turbocharged WRX engines.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDurability:\u003c\/strong\u003e Forged 4340 steel construction offers superior strength and fatigue resistance under extreme conditions.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e Precision-engineered for 2015-2021 WRX engines ensuring exact OEM dimensions and reliable installation.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuality:\u003c\/strong\u003e Manufactured with strict quality control and fitted with ARP 2000 rod bolts for secure fastening.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompliance:\u003c\/strong\u003e NHRA legal certification on select SKUs supports competitive racing applications.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight Optimization:\u003c\/strong\u003e I-beam design balances strength and weight for improved engine response and longevity.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eWhat's Included\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e4× Manley Performance Pro Series I-Beam Connecting Rods\u003c\/li\u003e\n  \u003cli\u003e16× ARP 2000 Rod Bolts (4 per rod)\u003c\/li\u003e\n  \u003cli\u003eInstallation instructions\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eInstallation \u0026amp; Compatibility\u003c\/h4\u003e\n\u003cp\u003eInstallation of the Manley Pro Series I-Beam Connecting Rod Set requires engine disassembly and precise torque application of the ARP 2000 bolts. This is a professional-level upgrade best installed by an experienced engine builder or mechanic familiar with Subaru EJ25 engines. Proper balancing and clearancing are recommended to ensure optimal performance and reliability. No modifications to the engine block are necessary, but verify compatibility with your specific WRX model year and build specifications. Tuning is required to safely maximize the power potential supported by these rods.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProfessional Installation:\u003c\/strong\u003e Recommended\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModifications Required:\u003c\/strong\u003e None\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVerify Compatibility:\u003c\/strong\u003e Confirm fitment for your specific 2015-2021 WRX model and engine build\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eShop with confidence at Subimods—your Subaru parts specialists.\u003c\/p\u003e","brand":"Manley Performance","offers":[{"title":"Default Title","offer_id":50599851425967,"sku":"14431-4","price":1128.88,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0587\/3598\/4815\/files\/manley-performance-pro-series-i-beam-connecting-rod-set-2015-2021-wrx-14431-4-5588277.jpg?v=1791489252","url":"https:\/\/subimods.com\/products\/manley-performance-pro-series-i-beam-connecting-rod-set-2015-2021-wrx","provider":"Subimods.com","version":"1.0","type":"link"}