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Real experience
We test before we recommend.
PRODUCT DESCRIPTION
JRspec forged connecting rods, manufactured with H-beam technology, for Mitsubishi Lancer GSR vehicles with 4G93 engine.
Made of high-quality ANSI4340 (EN24) forged steel, with a resistance of over 200 hp per cylinder.
Vacuum degassed before processing.
All forgings are X-rayed before processing.
Heat-treated (normalized).
After processing, they are stress relieved.
Aligned edges.
Each hole has been honed twice (before and after assembly), ensuring a perfect circumference (0.01 mm tolerance). Additionally, the connecting rods have perfect vertical straightness with a tolerance of 0.01 mm; many well-known brand manufacturers have discrepancies greater than 0.1 mm, leading to premature bearing wear.
Each connecting rod + end kit has its own serial number. The sets are weight-matched and end-to-end balanced. The cylinder heads are reinforced with the highest quality bronze bushings in the rear piston pin position.
The connecting rods have been tested in a Calibra Tsunami engine with over 1500 hp.
Length: 133 mm
Pin: 19 mm
Bolts: 3/8" Korby - Connecting rods + ARP bolts










WHY THETUNERLAB
We have spent years building cars, racing, and testing the exact same parts that we sell.
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We test before we recommend.
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We help you choose the right part.
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Only trusted manufacturers.
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Before and after the purchase.
+10 years
of passion for drifting
+30.000
available products
+5.000
satisfied customers
24/7
passion for motoring
Each product indicates compatible models in the product description. If you have any questions, you can contact us and we will help you choose your best option.
-If the product is in stock, the usual delivery time is 2 to 5 working days.
-If the product is out of stock, the delivery time is 7 to 15 working days.
All our products come with the manufacturer's official warranty and comply with current regulations.
Yes. We ship orders to Spain and most European countries using specialized transport agencies.
You can contact our team via WhatsApp, email, or our website's contact form.
Shipping costs depend on the type of product, its weight, dimensions, and the destination country. In most cases, the amount is calculated automatically during the checkout process before the order is finalized.
For some products, especially large items or those with special characteristics, shipping costs may require a manual review. If the amount shown does not match the actual shipping cost, we will contact you before processing the order to inform you of the final cost and request your confirmation before proceeding. We will never charge any additional fees without your authorization.