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2.0L 16v - 4G63 7-bolt
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2.0L 16v - 4G63 7-bolt
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Set of 4 forged 4340 rods for the Mitsubishi 4G63 7-bolt, 156 mm centres.
The 4G63 is the 2.0-litre turbocharged four-cylinder that built Mitsubishi's motorsport legend. Part of the 4G6 family, this cast-iron block with an aluminium head (16 valves, DOHC) displaces 1,997 cm³ with an 85 mm bore and an 88 mm stroke. From 1996 Mitsubishi switched to a flywheel secured by 7 bolts (hence the "7-bolt" name), stiffer than the earlier 6-bolt design.
This 7-bolt version powers the Lancer Evolution IV to IX as well as the second-generation Eclipse and Talon. Famously near-indestructible, the 4G63T easily withstands power figures well beyond stock once the rotating assembly is upgraded. The rods shown here are long rods with a 156 mm centre distance (versus 150 mm stock), favoured on stroker builds or to optimise the rod/stroke ratio of an aggressive build.
Machined from high-strength forged alloy steel, these rods replace the factory parts whose limit shows as soon as boost and rpm climb. Forging aligns the metal grain with the loads, delivering fatigue and bending resistance far beyond a mass-produced rod.
Each set ships with its ARP high-performance hardware (ARP 2000, L19 or CA625+ depending on the variant), factory-fitted. The range covers H and I profiles, in 4340 steel and, for the ZRP "IP" version, in 817M40T steel, to suit circuit builds as well as the most demanding big-turbo and rally setups.
| Reference | Brand | Profile | Hardware | Pin Ø OEM 22 mm | Small-end width | Big-end Ø OEM 48.01 mm | Big-end width | Centres OEM 150 mm | Steel | Weight per rod |
|---|---|---|---|---|---|---|---|---|---|---|
| 14020-4 | Manley | H | ARP 2000-3/8"-38mm | 22 | 48 | 26,4 | 156 | 4340 | 545 | |
| 15020-4 | Manley | H-HD | ARP 2000-3/8"-38mm | 22 | 48 | 26,4 | 156 | 4340 | 635 | |
| 15020R6-4 | Manley | H-HD | ARP CA625+-3/8"-38mm | 22 | 48 | 26,4 | 156 | 4340 | 635 | |
| 14421-4 | Manley | I-HD | ARP 2000-3/8"-41mm | 22 | 48 | 26,4 | 156 | 4340 | 645 | |
| 14421R6-4 | Manley | I-HD | ARP CA625+-3/8"-41mm | 22 | 48 | 26,4 | 156 | 4340 | 645 | |
| R-MIT-007-I | ZRP | I-HD | ARP 2000-3/8"-38mm | 22 | 48 | 26,4 | 156 | 4340 | 612 | |
| R-MIT-007-I-L19 | ZRP | I-HD | ARP L19-3/8"-38mm | 22 | 48 | 26,4 | 156 | 4340 | 612 | |
| R-MIT-007-IP | ZRP | I | ARP L19-3/8"-38mm | 22 | 48 | 26,4 | 156 | 817M40T | 633 |
OEM reference: (set of 4 rods).
| Rod | Hardware | Tightening torque | Recommended stretch |
|---|---|---|---|
| Manley (14020-4) | ARP 2000 | 81,3 N·m | 0,147–0,157 mm |
| Manley (15020-4) | ARP 2000 | 81,3 N·m | 0,147–0,157 mm |
| Manley (15020R6-4) | ARP CA625+ | 88,1 N·m | 0,160–0,170 mm |
| Manley (14421-4) | ARP 2000 | 81,3 N·m | 0,147–0,157 mm |
| Manley (14421R6-4) | ARP CA625+ | 88,1 N·m | 0,165–0,190 mm |
| ZRP (R-MIT-007-I) | ARP 2000 | 61,0 N·m | 0,140–0,152 mm |
| ZRP (R-MIT-007-I-L19) | ARP L19 | 67,8 N·m | 0,152–0,165 mm |
| ZRP (R-MIT-007-IP) | ARP L19 | 67,8 N·m | 0,152–0,165 mm |
Manufacturers recommend the stretch method rather than a torque figure: the actual bolt elongation is measured with a dedicated gauge, ensuring an even preload. The values above are indicative and must always be confirmed against the hardware maker's documentation.
| 4340 is a nickel-chromium-molybdenum alloy steel, forged and then heat-treated. It combines high tensile strength (around 1,200 to 1,300 MPa), excellent toughness and very good fatigue resistance: the recognised standard for competition rods. The ZRP "IP" version uses 817M40T steel (the European equivalent of quenched-and-tempered 4340), chosen for its metallurgical consistency and increased strength. |
 | H profile (H / H-HD). The H section offers the best stiffness/weight balance under heavy compression loads. Ideal for high-torque big-turbo builds, it is offered here in H and H-HD (reinforced) versions. |
 | I profile (I-HD / I). The lighter I section reduces reciprocating mass and suits rev-happy engines. Available in I-HD (reinforced) and I (ZRP), it covers uses from time-attack to rally. |
The rod bolt is one of the most heavily loaded parts of the engine. Every variant here uses ARP hardware in 3/8" diameter, a guarantee of reliability at high rpm. The grade choice depends on target power and budget.
 | ARP 2000. Tensile strength around 220,000 psi (≈ 1,517 MPa). In 3/8", it secures about 200 hp per cylinder and rpm up to 8,500. The best performance/price ratio for the vast majority of builds. |
 | ARP L19. Very high strength grade (≈ 260,000 psi) for hard-driven engines: in 3/8", it allows about 250 hp per cylinder and rpm up to 10,000. Corrosion-sensitive, it requires oiled storage. |
 | ARP CA625+. Premium alloy steel designed for extreme environments (endurance, big-turbo). Superior strength and fatigue life, with no particular storage constraint. |
| Stretch method. Rather than relying on torque alone, bolt elongation is measured with a stretch gauge: the only method that guarantees an exact, repeatable preload, essential to rod integrity at high rpm. |
Discover the ARP stretch gauge
This page brings together two benchmark manufacturers, selected for their forging quality and motorsport reputation.
 | Manley Performance. American manufacturer renowned for its Turbo Tuff and Pro Series rods, a global reference on the 4G63. Forged in 4340 (or 300M on some variants), H and I profiles. |
 | ZRP. Forged rods designed by Alex Drakos (Athens), valued for their excellent value for money and availability in 4340 and 817M40T steels. |
 | 1) Small end 2) Small-end diameter 3) Rod beam 4) Rod bolt 5) Big end 6) Rod nut / bolt 7) Rod cap 8) Big-end diameter 9) Center-to-center |
| Brand | Model (chassis) | Engine code | Power | Years |
|---|---|---|---|---|
| Mitsubishi | Lancer Evolution IV–VI (CN9A/CP9A) | 4G63T | 280 hp | 1996–2001 |
| Mitsubishi | Lancer Evolution VII–IX (CT9A) | 4G63T | 280 hp | 2001–2007 |
| Mitsubishi | Eclipse GST / GSX 2G (D30) | 4G63T | 210 hp | 1995–1999 |
| Eagle | Talon TSi 2G | 4G63T | 210 hp | 1995–1998 |
Fitting forged rods means investing once to reliably strengthen the bottom end for good. Against the cost of a failure (block, crankshaft, head) on a built 4G63, a set of upgraded rods is negligible. Supplied with their ARP hardware, they avoid separate purchases and secure the power increase with no compromise on longevity.
