06-14 WRX / 04+ STi Grade B Platinum Series Piston - Single by Manley Performance
Manley pistons are machined from high-strength 2618 alloy. Each design is lightweight yet robust enough to provide a long service life. Our unique "one-fixturing" manufacturing process ensures perfect ring groove and skirt squareness, ensuring maximum horsepower. Round wire locks, tool steel wrist pins, and rings are included with every set at no additional charge.
Specifications
- Pin: Standard 0.180" wall
- Bore Size: 99.5mm (Grade B)
- Rod Length: 5.137"
- Stroke: 79mm Standard Stroke (2.5L)
- Comp Distance: 1.209"
- Dome Volume: -17 cc
- Cylinder Head cc: 57
- Compression Ratio: 8.5:1
- Piston Type: Dish
- Weight: 411 grams
- Ring Set: 46995DT–1
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 of groove size, shape, flatness, and finish.
- All final turning is performed in a single fixturing to ensure the ring is perfectly square to the cylinder wall.
- Federal Form-Scan gauges verify ideal skirt indexing for polarity between the pin hole and the skirt.
- Value-added features such as pressure balance grooves are included in all series.
- Precision pin hole machining results in precise compression distance, accurate lock ring groove spacing, sizing, and concentricity.
Please Note: These pistons feature skirt diameters compatible with OEM Grade A or B bores, providing a piston-to-wall clearance range of 0.0023" - 0.0031". Please check the bore grade on top of your block and order the appropriate quantity of Grade A or B pistons. (Sold individually, not as a set.)
Applications
- 2006-2014 Subaru WRX
- 2004-2020 Subaru WRX STi
What's in the box?
- 1 - Piston
- 1 - Piston Ring Set
- 1 - Wrist Pin
- 1 - Spiral Lock
Warranty
- Manley products are sold without warranty due to the nature of their intended use.
Before Placing Your Order
〇 Regarding Import Duties and Taxes
At the Shaftoya shopping site, we pay the import consumption taxes incurred during import on your behalf, so there will be no additional charges beyond the total amount paid at checkout.
〇Checking Compatibility
Our entire product database is based on North American vehicles (USDM). Please confirm whether or not these products can be installed on Japanese market vehicles (JDM) before ordering. (If you are unsure if a listed product is compatible with your vehicle, please feel free to contact us and our support team will look into it for you.)
If you 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 vehicle model in the tabs on our top page, this does not necessarily mean they are compatible with Japanese market vehicle 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, the actual shipping cost may occasionally differ significantly from the amount calculated automatically. In such cases, we will contact you individually via email.
In principle, all products are shipped internationally from our U.S. warehouse. Unlike domestic shipping in 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. Furthermore, all products are transported by air; they are not shipped by sea.
○ Regarding Japanese Vehicle Inspection (Shaken) Compatibility
The products we carry are generally designed and manufactured outside of Japan. Please be aware that they are not compliant with the "Japanese Vehicle Inspection (Shaken) System," and we cannot provide documents such as strength calculation reports for the Japanese inspection system. Therefore, all parts are sold for use on "circuits, private property, or off-road," and installation and use are at your own risk.
○ Regarding Warranty
Please check the contents of your order immediately upon arrival. As all products are shipped internationally from outside Japan, there may be shipping damage to the packaging or the products themselves. We will only provide returns, refunds, or replacements for products with shipping damage, defective goods, or incorrect items if notified within 7 days of receipt. Please understand that for products sold through our company, all warranty-related support will be handled "exclusively through us." We do not provide support through other companies or distributors located within Japan.