{"title":"Forged Internals","description":null,"products":[{"product_id":"rpm-forged-h-beam-race-connecting-rods-bmw-n55","title":"Forged H-Beam Connecting Rods – BMW N55","description":"\u003cp\u003eForged H-beam connecting rods for the BMW N55, built for serious power and high boost. Precision-forged from 4340 chrome moly steel and designed to accept genuine ARP 2000 bolts, they handle the loads that limit factory rods on big-power street, track and drag builds. ARP 2000 bolts included.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eForged 4340 chrome moly steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDesign\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eH-beam\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSmall end\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBronze alloy bushing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBig end\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePrecision honed, shot-peened\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBolts\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGenuine ARP 2000 \/ 625+\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRated to\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e800–1000+ hp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eUse\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHigh boost, track, drag, high-power street builds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003ch3\u003eWhat it does\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHandles big power, with 4340 chrome moly and an H-beam profile that resist bending and twisting at high RPM and cylinder pressure, rated to 800–1000+ hp.\u003c\/li\u003e\n\u003cli\u003eLasts under load, heat-treated and shot-peened to resist fatigue even under detonation or knock.\u003c\/li\u003e\n\u003cli\u003eSpins true, with CNC-honed, fully balanced big ends that keep tight clearances and oil-film stability at high engine speeds.\u003c\/li\u003e\n\u003cli\u003eRevs quicker, with a lighter H-beam profile that cuts reciprocating mass for sharper throttle response.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eBuild quality\u003c\/h3\u003e\n\u003cp\u003ePrecision-forged from 4340 aircraft-grade chrome moly, shot-peened and heat-treated, with bronze small-end bushings and deep locking grooves for ARP bolt stability. Pair with RPM Tuning forged 4032 pistons, upgraded bearings and MLS head gaskets for a complete forged bottom end.\u003c\/p\u003e\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eFits BMW N55 engines across E- and F-series platforms: 135i \/ 335i \/ 435i, M235i \/ M2 (non-Competition), X3 35i \/ X4 35i, and 640i \/ 740i N55 variants.\u003c\/p\u003e","brand":"RPM Tuning","offers":[{"title":"Default Title","offer_id":42742314238061,"sku":null,"price":1199.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0627\/2729\/0989\/files\/Artboard9_ff90030d-0462-42ca-8dc4-8150ee2b1664.png?v=1754454724"},{"product_id":"rpm-tuning-forged-h-beam-race-rods-pistons-kit-bmw-b48","title":"Forged Rods \u0026 Pistons Kit – BMW B48","description":"\u003cp\u003eA complete forged bottom-end kit for the BMW B48, pairing 4340 chrome moly H-beam rods with 4032 forged pistons. Together they give a tuned B48 the strength for high boost and high RPM that factory internals can't match, whether you're building a track car or a daily-driven sleeper. ARP 2000 bolts included.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRod material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eForged 4340 chrome moly steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePiston material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eForged 4032 aluminium alloy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRod design\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eH-beam\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSmall end\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBronze alloy bushing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBig end\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCNC-honed, shot-peened\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBolts\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eARP 2000 \/ 625+\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRated to\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e800–1000+ hp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBalancing\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e±1.5g per set\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eUse\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTrack, high boost, drag, street builds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003ch3\u003eWhat it does\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHandles big power, with 4340 H-beam rods and 4032 pistons that take high boost and cylinder pressure together, rated to 800–1000+ hp.\u003c\/li\u003e\n\u003cli\u003eLasts under load, both forged, CNC-machined and shot-peened for fatigue resistance under detonation and knock.\u003c\/li\u003e\n\u003cli\u003eRuns cooler and smoother, with 4032 pistons that reduce thermal expansion and slap, everything balanced within ±1.5g per set.\u003c\/li\u003e\n\u003cli\u003eBuilt around ARP, with precision-machined caps and deep locking grooves that seat genuine ARP bolts for maximum clamping force.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eBuild quality\u003c\/h3\u003e\n\u003cp\u003eMatched forged rods and pistons, precision CNC-machined for true bores and tight clearances and shot-peened for stress relief. Pair with upgraded bearings, head studs and proper cooling for the complete forged bottom end.\u003c\/p\u003e\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eFits all Gen 1 and Gen 2 BMW B48 engines across 1, 2, 3, 4 and 5 Series, X1, X3, X4 and MINI (F- and G-chassis).\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003ePlease confirm piston compression height and crown clearance for 20i \u0026amp; 30i, and confirm Gen 1 vs Gen 2 B48 variant before assembly.\u003c\/em\u003e\u003c\/p\u003e","brand":"RPM Tuning","offers":[{"title":"Default Title","offer_id":42746891370605,"sku":null,"price":1999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0627\/2729\/0989\/files\/PDG04482-2_71ca9966-1983-41e7-b426-1643045646f1.png?v=1754454591"},{"product_id":"rpm-forged-h-beam-race-connecting-rods-bmw-b48","title":"Forged H-Beam Connecting Rods – BMW B48","description":"\u003cp\u003eForged H-beam connecting rods for the BMW B48, built for serious boost and high-power builds. Precision-forged from 4340 chrome moly steel and designed to accept genuine ARP 2000 bolts, they handle the loads that crack factory rods on hybrid turbo and forged bottom-end setups. ARP 2000 bolts included.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eForged 4340 chrome moly steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDesign\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eH-beam\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSmall end\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBronze alloy bushing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBig end\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePrecision honed, shot-peened\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBolts\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGenuine ARP 2000 \/ 625+\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRated to\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e800–1000+ hp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eUse\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHigh boost, hybrid turbos, track builds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003ch3\u003eWhat it does\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHandles big power, with 4340 chrome moly and an H-beam profile that resist flex under heavy boost and detonation, rated to 800–1000+ hp.\u003c\/li\u003e\n\u003cli\u003eLasts under load, heat-treated and shot-peened to resist fatigue and microscopic fractures in motorsport and endurance use.\u003c\/li\u003e\n\u003cli\u003eSpins true, with CNC-machined and fully balanced big ends that maintain crankshaft equilibrium and bearing life.\u003c\/li\u003e\n\u003cli\u003eRevs quicker, with a lighter H-beam profile that cuts reciprocating mass without losing strength.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eBuild quality\u003c\/h3\u003e\n\u003cp\u003ePrecision-forged from 4340 aircraft-grade chrome moly, shot-peened and heat-treated, with bronze small-end bushings and deep locking grooves for ARP bolt stability. Pair with RPM Tuning forged 4032 pistons, upgraded bearings and an MLS head gasket for a complete forged bottom end.\u003c\/p\u003e\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eFits all Gen 1 and Gen 2 BMW B48 engines across 1, 2, 3, 4 and 5 Series, X1, X3, X4 and MINI (F- and G-chassis).\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003ePlease confirm Gen 1 vs Gen 2 B48 variant before assembly.\u003c\/em\u003e\u003c\/p\u003e","brand":"RPM Tuning","offers":[{"title":"Default Title","offer_id":42746941603949,"sku":null,"price":1099.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0627\/2729\/0989\/files\/PDG04450-2.png?v=1754465271"},{"product_id":"rpm-forged-race-piston-kit-bmw-b48","title":"Forged Piston Kit – BMW B48","description":"\u003cp\u003eForged 4032 pistons for the BMW B48, precision-engineered for high-boost performance and long-term durability. The 4032 alloy runs cooler and tighter than 2618 while staying strong, making it ideal for turbocharged street and track builds that need reliability without giving up power.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4032 forged aluminium alloy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDesign\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLightweight, coated skirts, valve-reliefed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePin type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFull-floating wrist pin (HD upgrade available)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBalancing\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e±1.5g per piston\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eUse\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBoosted builds, track, street, rally\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003ch3\u003eWhat it does\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRuns cooler, with 4032 alloy that has lower thermal expansion and strong wear resistance for reliable street and motorsport use.\u003c\/li\u003e\n\u003cli\u003eTakes boost, built for aggressive tuning and high cylinder pressures on pump, race fuel or E85.\u003c\/li\u003e\n\u003cli\u003eCuts friction, with coated skirts that reduce friction and piston slap, plus valve reliefs to suit aftermarket cams and oversized valves.\u003c\/li\u003e\n\u003cli\u003eRuns smooth, with each piston weight-matched within ±1.5g for balanced reciprocating mass and longer bearing life.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eBuild quality\u003c\/h3\u003e\n\u003cp\u003eCNC-machined from 4032 forged aluminium, balanced and coated, supplied with precision full-floating wrist pins as standard. Pair with RPM Tuning forged 4340 H-beam rods, ARP 2000 bolts, upgraded bearings and an MLS head gasket for a complete forged bottom end.\u003c\/p\u003e\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eFits all Gen 1 and Gen 2 BMW B48 engines across 1, 2, 3, 4 and 5 Series, X1, X3, X4 and MINI (F- and G-chassis).\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003ePlease confirm piston compression height and crown clearance for 20i \u0026amp; 30i, and confirm Gen 1 vs Gen 2 B48 variant before assembly.\u003c\/em\u003e\u003c\/p\u003e","brand":"RPM Tuning","offers":[{"title":"Default Title","offer_id":42747672756333,"sku":null,"price":1099.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0627\/2729\/0989\/files\/PDG04607.png?v=1755757779"}],"url":"https:\/\/www.rpmtuning.pro\/collections\/forged-internals.oembed","provider":"RPM Tuning ","version":"1.0","type":"link"}