Automotive Connecting Rods Market Size, CAGR & Forecast, 2025-2035

Hybrid Engines Keep Connecting Rod Demand Rising Even as Battery Cars Gain Share

Global spending on automotive connecting rods reached USD 6.84 Billion in 2025 and is set to reach USD 7.04 Billion in 2026 and USD 9.07 Billion by 2035, a CAGR of 2.86% over 2025-2035. The rod links each piston to the crankshaft, and every combustion engine built, whether in a conventional car, a full hybrid, a plug-in hybrid or a heavy truck, still needs one rod per cylinder.

Radial Insights sizes the Automotive Connecting Rods market at the value of finished rods (rod body, cap, bushing and bolts) sold to vehicle makers, engine builders and the replacement trade for passenger cars, light and heavy commercial vehicles and on-road two-wheelers. We exclude off-highway, marine, aviation and stationary generator engines, crankshafts, rod bearings sold as separate service parts, and compressor rods. Values are at manufacturer selling price in constant 2025 US dollars.

Volume follows engine output. OICA counted 96.4 million vehicles built worldwide in 2025, up 3.9% from 92.7 million in 2024, and China alone made 34.53 million. The IEA estimates that more than 20 million electric cars were sold in 2025, about one in four new cars, yet that total includes plug-in hybrids, each of which still carries a three or four cylinder engine. Toyota sold a record 5.04 million electrified vehicles in fiscal 2025, most of them hybrids with conventional rods.

Hybrid electric powertrains are the fastest segment in our model at a 6.85% CAGR, because hybrid engines run at higher thermal efficiency and peak cylinder pressure, which pushes buyers toward fracture-split powder forged and high-strength forged steel rods with tighter weight tolerances. Africa is the fastest region at 4.10% from a small base, while Asia Pacific (APAC) holds more than half of 2025 value.

Price per rod differs widely: a sintered rod for a 1.5 liter passenger engine sells for a few dollars, while a heavy-duty diesel or natural gas rod for a 15 liter engine sells at many times that level. That mix is why value grows faster than unit volume in the Automotive Connecting Rods market through 2035, even though total combustion engine output is expected to flatten in the early 2030s.

Powder Forged and Hybrid-Duty Rods Outgrow the Base Market Across Every Dimension

We split the Automotive Connecting Rods market across five dimensions. Growth rates differ because the rod is a mature part whose design is tied to engine architecture: materials and processes shift slowly, while engine type and channel move with fleet policy and vehicle age.

Forged steel leads on material while titanium posts the fastest rate from a niche base

Forged steel rods remain the largest material group because medium and heavy commercial engines, turbocharged gasoline engines and most performance applications specify them, and their 2.70% rate tracks the market. Powder metal sintered steel grows at 3.35% because sinter-forged rods are fracture split at the big end, which removes cap machining and saves cost on high-volume three and four cylinder engines. Titanium grows at 4.60% from a tiny base in racing, high-end sports cars and premium motorcycles. Cast iron, at 1.20%, is losing ground as older engine families retire, and aluminum, at 2.10%, stays a niche for drag racing and some small engines.

Billet machining grows fastest on process, but hot forging carries most volume

Hot forging remains the default route for steel rods and grows at 2.65%. Powder forging grows at 3.40% as new engine programs in China, India and Japan adopt it. Billet machining posts the fastest rate at 3.90% because performance builders such as Molnar Technologies and CP-Carrillo keep adding billet and short-run forged lines for high-boost engines. Casting grows at only 1.30%.

Hybrid engines set the pace on engine type, diesel lags

Hybrid electric powertrains grow at 6.85% because each new hybrid still needs a full set of rods, and hybrid engines often run Atkinson cycles with high compression, which raises fatigue loads. Natural gas and alternative fuel engines grow at 4.40%, helped by heavy-duty launches such as the Cummins X15N in the Freightliner Cascadia. Gasoline grows at 2.20% and diesel at 1.60%.

Two-wheelers grow fastest among vehicle types

Two-wheelers grow at 3.60% on rising motorcycle and scooter output in India and Southeast Asia. Light commercial vehicles grow at 3.05%, heavy commercial vehicles at 2.95% and passenger cars at 2.75%, with passenger cars the largest group by value.

The aftermarket outgrows OEM supply

The aftermarket grows at 3.80%, compared with 2.60% for OEM supply. Engine rebuilds, high-mileage fleet overhauls and the performance trade buy rods as single parts or full sets, and an older fleet creates more rebuild events. OEM supply grows more slowly because new engine output levels off after 2030.

Market Trends

Hybrid volume is replacing pure gasoline volume, not removing it

Toyota's record 5.04 million electrified sales in fiscal 2025, reported in April 2026, came mostly from hybrids, and the IEA's May 2026 outlook showed that plug-in hybrids remain a large part of China's electric sales. For rod suppliers, this means steady engine counts with higher specification per rod, since hybrid engines are designed for long life at high compression.

Engine suppliers are consolidating to protect combustion volume

In February 2026, Dauch Corporation, formerly American Axle and Manufacturing, completed its roughly USD 1.44 billion purchase of Dowlais Group, the parent of GKN Automotive and GKN Powder Metallurgy, a deal first announced in January 2025. Buyers now face fewer, larger suppliers of sintered precision engine parts.

Combustion engine orders are holding up better than expected

MAHLE reported in April 2026 that piston systems and air intake modules for combustion engines were among the largest contributors to its new OEM orders in 2025, and that the combustion share of order intake rose while electrification orders fell short of expectations. Rod demand follows the same engine programs.

Performance and racing rods are becoming a distinct product tier

A March 2026 trade review highlighted Molnar's PWR ADR Plus rods with larger beam sections for high-rpm engines, and the CP-Carrillo and Brian Crower forged 4340 rod partnership announced before the 2025 PRI Show. Engines making 1,500 to 2,000 horsepower in drag racing are pulling premium billet demand.

Restraints and Challenges

Battery electric cars remove the rod entirely

The IEA counts more than 20 million electric cars sold in 2025. Battery electric cars, a growing share of that total, need no rods at all, and China sold about 13 million electric cars in 2025, close to 55% of its new car sales. Each lost combustion engine removes three to eight rods from demand.

Regional production is shifting and Europe is shrinking

According to OICA's 2025 production review, Europe built 17.2 million vehicles in 2025, down 0.8%, and the Americas built 18.74 million, down 2.1%, while Asia grew. Rod plants in Germany, Italy and the United States face lower loading and pressure to move capacity.

Tariffs raise the cost of cross-border supply

The United States announced 25% Section 232 duties on imported automobiles and listed automobile parts in March 2025, including engines and engine parts. MAHLE's 2025 annual results release cited new US tariffs and weak US truck business as pressures, with group sales falling to EUR 11.257 billion from EUR 11.681 billion.

Price pressure from steel and energy costs

Forging is energy intensive, and rod makers carry high fixed costs in presses, heat treatment and machining lines. OEM contracts often include annual price reductions, so margin depends on productivity. MAHLE cut 3,466 jobs in 2025 to protect earnings, which shows how tight conditions remain in engine parts.

Growth Drivers

Hybrid powertrain build-out in Asia, North America and Europe

Hybrids keep the combustion engine in production while lifting rod specification. Toyota sold 5.04 million electrified vehicles in fiscal 2025, up 6.5%, out of 10.48 million total, which puts close to half of its volume in electrified models. China produced 16.626 million new energy vehicles in 2025, up 29%, and a large share were plug-in or range-extender models that need an engine. Each hybrid engine tends to run long periods at high load and high compression, which favors sinter-forged or high-strength forged steel rods with precise mass matching. The IEA expects about 23 million electric car sales in 2026, and plug-in hybrids within that total keep engine plants running in China and Europe. Range-extender SUVs from Chinese brands add a further engine per vehicle that battery models do not. We estimate that hybrid engine demand adds about +1.2% of annual growth to the Automotive Connecting Rods market over 2025-2035, the largest single driver in our model.

Heavy-duty natural gas and long-life truck engines

Commercial vehicle engines carry the highest rod value per engine. Daimler Truck North America said in April 2025 that production of the fifth-generation Freightliner Cascadia with the 15 liter Cummins X15N natural gas engine would begin in summer 2025, with the engine certified at 50 mg NOx and offering up to 10% better fuel economy than Cummins' 12 liter gas engine. Bharat Forge reported in May 2026 that North American truck production was recovering and that domestic Indian commercial vehicle demand stayed strong. Large-bore engines need forged rods that tolerate high cylinder pressure for a million miles or more. We attribute roughly 0.6 percentage point of the market's yearly growth rate to heavy-duty engines, including natural gas and stricter emissions engines in India, China and Brazil.

Rising vehicle output in India, ASEAN and Africa

OICA reported that India built 6.49 million vehicles in 2025 and that Africa's vehicle sales rose 22% to 1.29 million units, while Asia led global growth. Two-wheeler output in India and Southeast Asia adds one rod per single-cylinder engine at very high volume. New engine plants in these regions buy rods locally from suppliers such as Bharat Forge and from Japanese and European tier one firms with local forging. TVS Motor said in March 2025 that it aimed to move its full two-wheeler range to OBD-2B compliant engines, a step that keeps engine designs current and rod volumes high. This expansion lifts the market's growth by close to 0.5% each year and keeps emerging regions ahead of the global average.

Opportunities

Lightweight rods for downsized and hybrid engines

Every gram removed from a rod reduces reciprocating mass and friction. Suppliers that offer high-strength microalloyed steel, powder forged rods with thinner beams, or titanium rods for premium engines can win new programs even in a flat engine market.

Aftermarket and rebuild kits for an aging fleet

The global fleet keeps aging, and engine rebuild shops buy rods as sets. Brands that sell new rods with bolts and bushings ready to install, rather than reconditioned parts, can capture a 3.80% growth channel.

Asia Pacific (APAC) Holds Over Half of Rod Value, While Africa Grows Fastest from a Small Base

Asia Pacific (APAC)

Asia Pacific (APAC) accounted for 51.40% of the Automotive Connecting Rods market in 2025, worth USD 3.52 Billion. APAC rod revenue is projected to reach USD 4.91 Billion by 2035, a 3.40% CAGR. China built 34.53 million vehicles in 2025, India 6.49 million and Japan 8.41 million, and the region also dominates motorcycle output. Hybrid programs in China and Japan lift rod value per engine.

North America

North America held 18.60% of global value in 2025, or USD 1.27 Billion. Revenue in North America reaches USD 1.59 Billion by 2035 at a 2.25% CAGR. The United States built 10.24 million vehicles in 2025, and large pickup and heavy truck engines give North America high value per rod. Section 232 duties on engine parts push buyers toward local forging.

Europe

Europe represented 19.80% of 2025 value, about USD 1.35 Billion. European rod revenue rises only to USD 1.58 Billion by 2035, a 1.55% CAGR, the slowest of any region. Europe built 17.2 million vehicles in 2025, down 0.8%, and the shift from diesel to battery electric cars cuts rod counts, although Euro 7 rules for new types from 29 November 2026 keep combustion engines in production for hybrids.

Latin America

Latin America held 5.10% of 2025 value, close to USD 0.35 Billion. Latin America is forecast to reach USD 0.49 Billion by 2035 at a 3.40% CAGR. Brazil built 2.64 million vehicles in 2025, many with flex-fuel ethanol engines that need durable rods, and Mexico's engine plants supply North American assembly.

Middle East

The Middle East accounted for 3.00% of 2025 value, around USD 0.21 Billion. Middle East revenue grows to USD 0.29 Billion by 2035, a 3.45% CAGR. Demand in the Middle East comes mainly from the replacement trade for large gasoline SUVs, pickups and commercial fleets, with new assembly projects in Saudi Arabia and Turkey adding OEM volume.

Africa

Africa represented 2.10% of 2025 value, or USD 0.14 Billion. Africa is the fastest region at a 4.10% CAGR, reaching USD 0.21 Billion by 2035. OICA reported that African vehicle sales rose 22% in 2025 to 1.29 million units, and South Africa and Morocco remain the main engine and vehicle builders on the continent.

Recent Developments

• In May 2026, Bharat Forge reported FY26 consolidated revenue of Rs 16,812 crore, up 11.2%, citing a recovery in North American truck production and strong passenger vehicle export momentum in North and Central America.

• In May 2026, the IEA Global EV Outlook reported more than 20 million electric car sales in 2025 and forecast about 23 million in 2026, close to 30% of new car sales.

• In April 2026, MAHLE reported 2025 sales of EUR 11.257 billion and said piston systems and air intake modules for combustion engines were among the largest contributors to new OEM orders.

• In April 2026, OICA reported global vehicle production of 96.4 million units in 2025, up 3.9%, with China at 34.53 million and India at 6.49 million.

• In February 2026, Dauch Corporation completed its acquisition of Dowlais Group, adding GKN Powder Metallurgy's sintered precision components business.

• In April 2025, Daimler Truck North America announced that the Freightliner Cascadia would be built with the 15 liter Cummins X15N natural gas engine from summer 2025.

Tier One Engine Specialists Hold OEM Volume While Performance Brands Capture the Premium Tier

The Automotive Connecting Rods market is moderately concentrated at the OEM level, where engine programs run for seven to ten years and suppliers must invest in forging, sintering, fracture splitting and machining lines. Many vehicle makers still produce part of their rods in-house, which limits the share open to independent suppliers. The aftermarket and performance tier is fragmented, with dozens of specialist brands.

Global engine component suppliers

MAHLE supplies pistons, rods and complete piston-rod assemblies to car and truck makers worldwide and reported 64,242 employees at the end of 2025. Dauch Corporation, through GKN Powder Metallurgy, is one of the largest makers of sintered precision engine and transmission parts and gained scale with its February 2026 completion of the Dowlais deal. Linamar machines engine and driveline components for North American and European vehicle and engine plants. Miba makes sintered components and engine bearings for car and truck makers.

Forging specialists

Bharat Forge is one of the world's largest forging companies, supplying crankshafts, connecting rods and chassis parts to car and truck makers in India, Europe and North America, with FY26 consolidated revenue of Rs 16,812 crore. JD Norman Industries produces forged and machined rods for passenger car and commercial engine programs. Albon Engineering in the United Kingdom makes rods and crankshafts for heavy diesel, gas and specialty engines.

Engine makers with captive supply

Cummins designs its own heavy-duty engines, including the X15N natural gas engine, and controls rod specifications for those platforms through its own plants and approved suppliers. Many Japanese, Korean and Chinese vehicle makers also forge rods inside their group supply chains, which shapes the competitive field in APAC.

Performance and racing brands

CP-Carrillo is known for forged H-beam and A-beam rods for racing and high-boost street engines, and its partnership with Brian Crower Inc. added a mid-priced forged 4340 rod line sold through CP-Carrillo distribution. Molnar Technologies, based in Grand Rapids, Michigan, offers billet 4340 H-beam rods including the PWR ADR Plus range. Manley Performance supplies forged rods for drag racing and street performance builds. These brands compete on strength, weight and fast delivery rather than unit price.