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Performance Stroker Crankshaft for Mitsubishi 4G15 12V SOHC 1.5L

Upgrade your stock 4G15 engine from an 82mm stroke to an 87.5mm performance stroker crankshaft!

Designed for Mitsubishi 4G15 12V SOHC engines, this performance crankshaft allows you to increase engine displacement and torque while using the original-style 4G15 main and rod journal sizes.

Transplant this 87.5mm stroker crankshaft into your 4G15 engine and build a higher-torque, higher-performance setup.

FEATURES

  • Heat-treated steel construction

  • Nitrided hardened surface

  • Full-flow oiling design

  • Profiled counterweights

  • Machined for reduced weight

  • Micro-polished to exacting tolerances

  • Straight-shot and chamfered oil holes

  • Large fillet radius on all journals

  • Precision ground and micro-polished

  • Balanced crankshaft

  • Magnaflux inspected

  • Cross-drilled oil holes for improved rod-journal lubrication

  • Designed to provide increased torque and horsepower potential

  • Similar to original 4G15 main and rod journal dimensions

SPECIFICATIONS

  • Engine: Mitsubishi 4G15 12V SOHC

  • Original Stroke: 82mm

  • Performance Stroke: 87.5mm

  • Rod Journal Diameter: 42mm

  • Main Journal Diameter: 48mm

  • Crankshaft Weight: Approximately 12.5–13kg

FITMENT

Suitable for:

  • Mitsubishi Lancer 1991–1996

  • Mitsubishi Mirage 1991–1996

  • Mitsubishi Colt 1991–1996

  • Proton Jumbuck

Engine: Mitsubishi 4G15 12V SOHC 1991–1996

BUILD / COMPATIBILITY NOTES

  • Can be used with the standard 4G15 connecting rods or suitable aftermarket connecting rods.

  • Uses standard-size 4G15 main and connecting-rod bearings, subject to proper engine inspection and measurement.

  • For a higher-performance build, can be combined with 4G18 Lancer CS3 pistons in 76mm, 76.5mm, 77mm or 78mm sizes.

  • Original 4G15 flywheel can be fitted using the original 5-bolt mounting pattern.

  • Original 4G15 SOHC crank pulley mounting arrangement can be retained.

AVAILABLE ADD-ON PERFORMANCE PARTS

We also supply a wide range of aftermarket performance parts, including:

  • Forged pistons

  • Performance camshafts

  • Valve springs

  • Titanium retainers

  • Titanium head stud nut kits

  • Adjustable cam gears

  • Metal head gaskets

  • Lightweight crank pulleys

  • Connecting rods

  • Performance bearings

  • Performance clutch systems

  • Ignition systems

  • Other engine performance parts

Please contact us if you need additional parts for your engine build.

INSTALLATION & IMPORTANT NOTICE

Professional installation and proper engine tuning are highly recommended.

This is a performance engine component and should be installed by a qualified engine builder or experienced technician. Proper measurement, clearances, balancing, piston-to-valve clearance, compression ratio and engine setup must be checked before operation.

We are not responsible for failure, damage or incorrect installation resulting from improper installation, incorrect engine setup, misuse or unsuitable combinations of components.

Please make sure you purchase the correct parts for your engine and application.

Wrong purchases are not refundable.

Performance parts are intended for experienced builders and motorsport/performance applications.


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Shipping, Returns & Warranty Summary

Items are shipped to the buyer's eBay/PayPal address. Please ensure your address is correct before payment.
Orders are usually dispatched within 1–3 business days after payment is received.
Orders may be cancelled for a full refund only before shipment.
International buyers are responsible for any import duties, taxes, or customs charges.
Returns & Refunds

If you receive a damaged, faulty, or incorrect item, please contact us with photo proof. We will arrange a replacement or refund at our expense.
For returns due to other reasons, items must be returned unused, unopened, and in their original condition within 14 days of receipt.
Return shipping costs are the buyer's responsibility unless otherwise approved.
Opened, used, modified, or damaged items are not eligible for return or refund.
Shipping charges are non-refundable unless the wrong item was sent or the item arrived damaged.
Exchanges

Exchanges may require additional shipping charges.
Photo evidence may be requested for claims involving damaged or incorrect