{"product_id":"clutch-masters-clutch-master-cylinders-hydraulics-2015-2021-wrx-2004-2021-sti","title":"Clutch Masters Clutch Master Cylinders Hydraulics 15-21 WRX \/ 04-21 STI","description":"\u003ch3\u003eClutch Masters Clutch Master Cylinders Hydraulics 15-21 WRX \/ 04-21 STI | Adjustable Bore .700\" | Hydraulic Clutch Upgrade\u003c\/h3\u003e\n\n\u003ch4\u003eOverview\u003c\/h4\u003e\n\u003cp\u003eThe Clutch Masters Clutch Master Cylinder is a precision-engineered hydraulic upgrade designed for Subaru WRX and WRX STI models from 2015 to 2021. This billet aluminum master cylinder replaces the OEM unit to provide a crisper, more responsive clutch pedal feel and eliminates the factory clutch delay valve for immediate clutch engagement. Ideal for enthusiasts upgrading their clutch system or seeking improved pedal feedback, this master cylinder ensures your hydraulic system keeps pace with aggressive driving and performance modifications.\u003c\/p\u003e\n\u003cp\u003eCrafted from 6061 billet aluminum, this master cylinder reflects Clutch Masters' commitment to quality and adjustability. The design allows fine-tuning of the master cylinder’s position relative to the firewall and pedal, as well as adjustable push rod length and clevis positioning. This flexibility lets drivers dial in clutch engagement and disengagement points precisely to their preference, a feature that sets this product apart from standard replacements.\u003c\/p\u003e\n\u003cp\u003eBy removing the clutch delay valve, this upgrade significantly improves shift response, especially during quick 1-2 gear changes where immediate clutch re-engagement is critical. For Subaru owners running high-powered setups who want to moderate clutch engagement shock, Clutch Masters offers a tunable Flow Control Valve as an optional complement. This master cylinder is a plug-and-play solution compatible with OEM slave cylinders, making it a practical and effective upgrade for WRX and STI drivers focused on performance and reliability.\u003c\/p\u003e\n\n\u003ch4\u003eFeatures \u0026amp; Specifications\u003c\/h4\u003e\n\u003cp\u003eThis Clutch Masters Clutch Master Cylinder is engineered for 2015-2021 Subaru WRX and WRX STI models and features a .700\" bore size for enhanced hydraulic response. Constructed from durable 6061 billet aluminum, it delivers precise clutch engagement and improved pedal feel for Subaru enthusiasts seeking a more direct and adjustable clutch operation.\u003c\/p\u003e\n\u003cul style=\"list-style:none;padding:0;margin:0;\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Clutch Masters\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProduct:\u003c\/strong\u003e Clutch Master Cylinders Hydraulics 15-21 WRX \/ 04-21 STI\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e MC15020-R\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e 2015-2021 Subaru WRX \/ STI 6-Speed\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e 6061 Billet Aluminum\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Natural Aluminum\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConstruction:\u003c\/strong\u003e CNC Machined\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Not specified\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBore Size:\u003c\/strong\u003e .700 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIncludes:\u003c\/strong\u003e Adjustable push rod and billet clevis, stainless steel -3AN line, banjo fittings with crush washers, rubber hose for reservoir connection\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eKey Benefits\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePerformance:\u003c\/strong\u003e Eliminates factory clutch delay valve for immediate clutch engagement and quicker shifts.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAdjustability:\u003c\/strong\u003e Fully adjustable master cylinder position and push rod length allow precise clutch pedal travel tuning.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDurability:\u003c\/strong\u003e CNC-machined billet aluminum construction ensures long-lasting strength and resistance to wear.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e Plug-and-play design compatible with OEM slave cylinders and factory reservoir connections on 2015+ WRX\/STI.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePedal Feel:\u003c\/strong\u003e Provides a crisper and more direct clutch pedal response for enhanced driver feedback.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInstallation:\u003c\/strong\u003e Complete kit includes all necessary hardware and fittings for a straightforward upgrade.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eWhat's Included\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e1× Clutch Masters 6061 Billet Aluminum Master Cylinder (.700\" Bore)\u003c\/li\u003e\n  \u003cli\u003e1× Stainless steel -3AN hydraulic line\u003c\/li\u003e\n  \u003cli\u003e1× Billet aluminum master cylinder adapter and jam nut\u003c\/li\u003e\n  \u003cli\u003e1× Barb fitting\u003c\/li\u003e\n  \u003cli\u003e1× Rubber hose to connect factory reservoir to master cylinder (for 2015+ WRX\/STI)\u003c\/li\u003e\n  \u003cli\u003e1× Extended and adjustable push rod with billet clevis\u003c\/li\u003e\n  \u003cli\u003e2× Banjo fittings with crush washers\u003c\/li\u003e\n  \u003cli\u003e1× Jam nut tool\u003c\/li\u003e\n  \u003cli\u003eInstallation instructions included\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eInstallation \u0026amp; Compatibility\u003c\/h4\u003e\n\u003cp\u003eInstallation of the Clutch Masters master cylinder is generally straightforward for those with moderate mechanical experience, as it is designed as a direct replacement compatible with OEM slave cylinders. The kit includes all necessary fittings and hardware, including a rubber hose for reservoir connection on 2015 and newer WRX\/STI models. Due to the adjustable nature of the master cylinder and push rod, it is highly recommended to carefully measure and set the clutch pedal throw to avoid overthrowing the clutch diaphragm. Adjustments to the master cylinder housing location, push rod length, or installation of a clutch pedal stop may be necessary to ensure proper operation and prevent damage.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProfessional Installation:\u003c\/strong\u003e Recommended for best results\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModifications Required:\u003c\/strong\u003e None, but adjustment and setup required to prevent diaphragm overthrow\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVerify Compatibility:\u003c\/strong\u003e Confirm fitment for your specific year and trim level of Subaru WRX or STI\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eShop with confidence at Subimods—your Subaru parts specialists.\u003c\/p\u003e","brand":"Clutch Masters","offers":[{"title":"Default Title","offer_id":47131509162159,"sku":"MC15020-R","price":243.4,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0587\/3598\/4815\/files\/M198793053.jpg?v=1782934975","url":"https:\/\/subimods.com\/products\/clutch-masters-clutch-master-cylinders-hydraulics-2015-2021-wrx-2004-2021-sti","provider":"Subimods.com","version":"1.0","type":"link"}