{"product_id":"manley-performance-04-subaru-wrx-sti-eh257-100mm-bore-dish-piston-set","title":"Manley Performance 04+ Subaru WRX\/STI EH257 100mm Bore Dish Piston Set","description":"Our signature \"Platinum Series\" pistons feature 2618 alloy forgings, proven cam and barrel skirt profiles, tool steel wrist pins, and moly skirt coatings on select part numbers. Join the ranks of professional engine builders and tuners who rely on Manley pistons for superior performance and durability.\nManley Piston Set, PIST-SUBARU 100mm\/1.209 CD\/DISH T\/T.\n\u003cul\u003e\n  \u003cli\u003eChrome Moly Wrist Pins: Premium Chrome Moly wrist pins come standard with our Standard Series Pistons. For select SKUs, we offer wrist pin upgrades to 9310 and Turbo Tuff\/DLC alloys, providing additional durability.\u003c\/li\u003e\n  \u003cli\u003eUnique Fixturing: Manley's unique fixturing allows for skirt turning and ring groove machining in a single operation, ensuring ultimate ring groove to skirt squareness.\u003c\/li\u003e\n  \u003cli\u003eExacting Ring Lands and Grooves: We adhere to strict standards for piston ring lands and grooves, resulting in enhanced ring seal and more power.\u003c\/li\u003e\n  \u003cli\u003eCam and Barrel Profiles: Our pistons boast cam and barrel (skirt) profiles that generate substantial power while being gentle on cylinder walls.\u003c\/li\u003e\n  \u003cli\u003e2618 Alloy Forgings: We use domestic 2618 alloy forgings, ensuring superior strength and performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe Manley Performance EH257 piston set is specifically designed for Subaru WRX and STI models from 2004 and newer, offering a reliable upgrade for high-performance applications. Crafted with premium 2618 aluminum alloy forgings, these pistons deliver exceptional strength and durability under demanding conditions. The piston set features proven cam and barrel (skirt) profiles that generate significant power while maintaining a gentle touch on cylinder walls, promoting longevity and consistent performance. Precision machined ring grooves and lands ensure optimal sealing, which translates into enhanced compression and power output, making these pistons an excellent choice for enthusiasts and professional tuners alike.\u003cbr\u003eManley's unique fixturing process allows for the ring groove and skirt turning to be completed in a single operation, ensuring perfect squareness and fitment. The pistons are equipped with high-quality chrome moly wrist pins as standard, with options for upgraded materials such as 9310 or Turbo Tuff\/DLC alloys for additional durability. The moly skirt coatings on select part numbers further improve wear resistance and reduce friction, contributing to improved engine efficiency.\u003cbr\u003eDesigned to meet the rigorous demands of high-performance engines, these pistons are not carb compliant and require proper acknowledgment of carb restrictions during installation. They are shipped individually and are ideal for custom engine builds or rebuilds where superior piston performance is required. With a bore size of 100mm and a compression ratio of 8.5:1, these pistons provide a balanced combination of power and reliability for turbocharged Subaru engines, ensuring a long service life and optimal performance in street and racing applications.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003e2618 alloy forgings: Ensures superior strength and durability for high-performance applications\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eCam and barrel (skirt) profiles: Designed to generate substantial power while being gentle on cylinder walls\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eProven ring and groove machining: Achieved through unique fixturing for ultimate squareness and sealing\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eExacting ring lands and grooves: Enhances ring seal and engine compression\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eChrome moly wrist pins: Standard with options for upgraded alloys like 9310 and Turbo Tuff\/DLC\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eMoly skirt coatings: Select part numbers feature coatings that reduce friction and wear\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eDesigned for Subaru WRX\/STI 2004+ models: Fits 100mm bore with 8.5:1 compression ratio\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eNot carb approved: Proper acknowledgment required during installation\u003c\/li\u003e\u003c\/ul\u003e\u003cstyle\u003etable.productattributes, .productattributes td { border-bottom: 1px solid #ddd; border-collapse: collapse; padding: 2px; text-align: left; }\u003c\/style\u003e\n\u003ctable class=\"productattributes\"\u003e\n\u003cthead\u003e\u003ctr\u003e\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbdoy\u003e\n\u003ctr\u003e\u003ctd\u003eAir Freight Prohibited: false\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eNot Carb Approved: true\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eCarb Acknowledgement Required: true\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eLtl Freight Required: false\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eProp 65: Y\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003ePart Type: automotive\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eEpa: N\/A\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eRegular Stock: false\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eUnits Per Sku: 1\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/tbdoy\u003e\n\u003c\/table\u003e\u003cbr\u003e","brand":"Manley Performance","offers":[{"title":"Default Title","offer_id":53602457190673,"sku":"632205C-4","price":762.84,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/3830\/0689\/files\/246bd78ef3a2c60b8f9bc4524311a257_55e47757-a14c-49a3-a4b1-59ea56956135.jpg?v=1779943497","url":"https:\/\/shoprenegade.com\/products\/manley-performance-04-subaru-wrx-sti-eh257-100mm-bore-dish-piston-set","provider":"Renegade Speed by Renegade Racing \u0026 Performance","version":"1.0","type":"link"}