2004+ Subaru WRX STi Grade A Turbo Tough Pistons with Rings - 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-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.
Specifications
- Pin: Standard 0.180" wall
- Bore Size: 99.5mm (Grade A)
- Rod Length: 5.137"
- Stroke: 79mm Standard Stroke (2.5L)
- Comp Distance: 1.209"
- Dome Volume: -22 cc
- Cylinder Head cc: 51
- Compression Ratio: 8.5:1
- Piston Type: Dish
- Weight: 405 grams
- Ring Set: 46995DT–1
Benefits
- Thicker skirt wall
- Increased corner section
- Formula Won "strut" forging
- Outer pin bosses
- Offset wrist pins for quiet startup
Please note: These pistons feature skirt diameters compatible with OEM Grade A or B bores, resulting in 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
- 2004+ Subaru WRX STi
What's in the box?
- 1 - Piston
- 1 - Piston Ring Set
- 1 - Wrist Pin
- 1 - Wire Lock
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Confirmation of Compatibility
All product databases are based on North American vehicles (USDM), so please confirm compatibility with Japanese vehicles (JDM) before ordering. (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 vehicle model in the tabs on our top page, it does not necessarily mean 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.
○ Regarding 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, 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.
In principle, all products are shipped internationally from our US warehouse. Unlike domestic shipping in 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 to confirm delivery dates in advance. All products are transported via air freight. They are never shipped by sea freight.
○ Regarding Japanese Vehicle Inspection (Shaken) Compatibility
Our products are basically all designed and manufactured outside of Japan. Please note that they are not compliant with the "Japanese Vehicle Inspection System," and we cannot provide strength calculation documents or similar paperwork for these requirements. Therefore, all parts are sold for the purpose of "use on circuits, private property, or off-road," and installation and use are at your own risk.
○ Regarding Warranty
Please check the contents immediately upon arrival. Since all products are shipped internationally from outside Japan, there may be shipping damage to the packaging or the product itself. Please understand that we will only provide returns, refunds, or replacement exchanges if you contact us within 7 days of receipt regarding damaged, defective, or incorrect items. Regarding products sold through us, please note that we will handle all warranty matters "exclusively through us." We do not provide support through other companies or distributors located within Japan.