4G63 7-Bolt 85.5mm+.5mm Oversized Bore 8.5/9.0:1 Dish Pistons with Rings - Single by Manley Performance
Manley pistons are machined from high-strength 2618 alloy. Each design is lightweight yet robust enough to ensure a long service life. Our proprietary "one-fixture" manufacturing process ensures perfect ring groove and skirt squareness to maximize horsepower. Round wire locks, tool steel wrist pins, and rings are included with every set at no additional charge.
Features
- 2618 high-strength alloy
- Lightweight design with offset wrist pins for quiet startup
- Pressure balance grooves
- Compatible with +1mm valve sizes
- Includes premium steel top rings, Napier seconds, and round wire locks
- Recommended piston clearance is 0.0035" measured 1.100" from the bottom of the oil ring
Benefits
- "Contour Forging" provides the optimal balance of strength and weight without internal milling that interrupts grain flow.
- Proprietary multi-step top ring groove machining process provides optimal control of groove size, shape, flatness, and finish.
- Final machining is performed in a single fixture to ensure rings are perfectly square to the cylinder wall.
- Federal Form-Scan gauges verify ideal skirt indexing for polarity between the pin bore and the skirt.
- Value-added features such as pressure balance grooves are included in all series.
- Precision pin bore machining ensures exact compression height, precise lock ring groove spacing, sizing, and concentricity.
Please note: The images provided are generic and may not be an exact representation of the product you will receive.
Applications
- 1993-1998 Eagle Talon TSi
- 1993-1994 Mitsubishi Eclipse GS
- 1993-1999 Mitsubishi Eclipse GST
- 1993-1999 Mitsubishi Eclipse GSX
- 1996-1999 Mitsubishi Eclipse Spyder GST
- 2003-2006 Mitsubishi Lancer Evolution
- 1993-1994 Plymouth Laser RS
What's in the box?
- 1 - Piston
- 1 - Piston Ring Set
- 1 - Wrist Pin
- 1 - Spiral Lock Set
Warranty
- Due to the nature of their intended use, Manley products are sold without warranty.
Before Ordering
〇Regarding Import Duties and Taxes
At Shaftoya Shopping Site, we pay the import consumption tax incurred during customs clearance on your behalf, so you will not be charged any additional fees beyond the total amount paid at checkout.
〇Compatibility Check
Our entire product database is based on North American vehicle specifications (USDM). Please confirm compatibility with your Japanese domestic vehicle (JDM) before placing your order. (If you are unsure whether the listed product is compatible with your vehicle, please feel free to contact us. Our support team will be happy to assist you.)
If you place an order without confirming compatibility, we cannot accept returns due to incompatibility.
Please note that even if products are sorted by selecting the year, manufacturer, and model using the tabs on our top page, this does not guarantee that they will fit Japanese model vehicles without modification.
All products have been translated into Japanese using translation software. As there may be confusing expressions, please contact us before ordering if you have any questions.
○Shipping
Shipping costs are paid at the time of checkout. Shipping estimates are calculated automatically when you enter your shipping address on the checkout page. For large items such as body parts, the actual shipping cost may significantly differ from the automated calculation in rare cases. In such instances, we will contact you via email separately.
Basically, all products are shipped internationally from our U.S. warehouse. Unlike domestic shipping within Japan, international shipping takes approximately 7 to 14 days, so please allow plenty of time for your order. If you are in a hurry, please contact us in advance to confirm delivery times. Note that all items are shipped via air freight. We do not use sea freight.
○Regarding Japanese Road Legal Compliance (Shaken)
Please be aware that all products we handle are designed and manufactured outside of Japan. They are not compliant with the "Japanese Vehicle Inspection System (Shaken)," and we cannot provide strength evaluation documents or similar paperwork for these regulations. Therefore, all parts are sold for the purpose of "use on circuits, private property, or off-road use only," and you assume all responsibility for installation and usage.
○Warranty
Please inspect the contents immediately upon delivery. As all items are shipped internationally from outside Japan, there is a possibility of shipping damage to the packaging or the product itself. We will only process returns, refunds, or replacements for damaged items, defective products, or incorrect orders if you contact us within 7 days of receipt. Please note that for all products sold through us, warranty support will be provided "exclusively through us." We do not coordinate with other companies or distributors located within Japan.