4G63 85.5mm Bore +.5mm -8.5/9.0 CR Dish Extreme Duty Piston Set with Rings - 4-Piece Set by Manley Performance
Manley pistons are machined from high-strength 2618 material. Each design is lightweight yet robust enough to provide a long service life. Our unique "one-fixture" manufacturing process ensures perfect ring groove and skirt squareness, maximizing horsepower. Round wire locks, tool steel wrist pins, and rings are included with every set at no additional charge.
Features
- Pin: Extreme Duty Pin 0.210" wall (9310 alloy) 0.866" / 22mm pin
- Bore Size: 85.5 (+.5mm)
- Rod Length: 156mm (+6mm longer)
- Stroke: 94 stroker (2.1L)
- Comp Distance: 1.012"
- Dome Volume: -17 cc
- Cylinder Head cc: 47cc for DSM, 43cc for EVO
- Compression Ratio: 8.5:1 for DSM, 9.0:1 for EVO
- Piston Type: Dish
- Weight: 277 grams
- Ring Set: 46855–4
- 2618 high-strength material
- Lightweight design with offset wrist pins for quiet startup
- Pressure balance grooves
- Compatible with +1mm valve sizes
- Includes premium steel top ring, Napier second, and round wire locks
- Recommended piston clearance is 0.0035" measured 1.100" from the bottom of the oil ring
Benefits
- "Contour forged" design 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 over groove size, shape, flatness, and finish.
- Final turning is performed in a single fixture, ensuring the rings are perfectly square to the cylinder wall.
- Federal Form-Scan gauges verify ideal skirt indexing relative to pin hole and skirt polarity.
- Value-added features such as pressure balance grooves are included in all series.
- Precision pin hole machining results in accurate compression distance, 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 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
- 1995–1999 Mitsubishi Galant
- 2003–2006 Mitsubishi Lancer Evolution
- 1993–1994 Plymouth Laser RS
What's in the Box?
- 4 - Pistons
- 4 - Piston ring sets
- 4 - Wrist pins
- 4 - Spiral locks
Warranty
- Manley products are sold without warranty due to the nature of their intended use.
Before Ordering
〇 Regarding Import Consumption Tax
At the Shaftoya shopping site, we pay the import consumption tax incurred at the time of import on your behalf, so there are no additional charges beyond the total amount paid at checkout.
〇 Checking Compatibility
All product databases are based on North American vehicles (USDM). Please confirm compatibility with Japanese vehicles (JDM) before placing your order. (If you are unsure whether a listed product is compatible with your vehicle, please feel free to contact us. Our support team will be happy to investigate for you.)
If you order without verifying compatibility, we cannot accept returns due to incompatibility.
Please note that even if items are filtered by selecting the year, manufacturer, and model using the tabs on our top page, this does not guarantee fitment on Japanese models 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.
○ Regarding Shipping
Shipping costs are paid at the time of checkout. Shipping estimates are calculated automatically once you enter your shipping address on the checkout page. For large items such as body parts, there may occasionally be a significant discrepancy between the automatically calculated shipping cost and the actual cost. In such cases, we will contact you individually via email.
All products are generally shipped internationally from our US warehouse. Unlike domestic shipping within Japan, international shipping takes approximately 7 to 14 days, so please order with time to spare. If you are in a hurry, please contact us in advance to confirm delivery times. All items are transported by air; sea freight is not used.
○ Regarding Japanese Vehicle Inspection (Shaken) Compliance
Please note that all products we handle are designed and manufactured outside of Japan. They are not compliant with "Japanese vehicle inspection (shaken) standards," and we cannot provide strength calculation documents for these purposes. Therefore, all parts are sold for the purpose of "circuit, private property, or off-road use," and installation and use are at your own risk.
○ Regarding Warranty
Please inspect the contents immediately upon arrival. Since all products are shipped internationally from outside Japan, packaging and products may sustain shipping damage. We will only accept returns, refunds, or exchanges for shipping-damaged items, defective products, or items different from what was ordered if you contact us within 7 days of receipt. Please understand that for products sold through our company, warranty support will be handled "exclusively through us." We do not provide support through other companies or distributors located within Japan.