{"title":"Michael Phelps Swim Spas Parts \u0026 Accessories","description":"\u003cp\u003eShop genuine Michael Phelps Swim Spas parts and accessories for Master Spas. Keep your swim spa in peak condition with high-quality components.\u003c\/p\u003e","products":[{"product_id":"master-spas-r4-15-mpt-filter","title":"Master Clear® MA-R4 Filter - 1.5\" MPT","description":"\u003cp\u003e\u003c!--StartFragment --\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eThe MA-R4 1.5\" MPT (Male Pipe Thread) is the current-generation primary filter for a wide range of MasterSpas hot tubs and swim spas. Built with a 1.5-inch male pipe thread connection, it installs securely into your spa's filtration housing and is designed to accept the EcoPur® Charge Mineral Cartridge inside, delivering both mechanical filtration and mineral purification in a single unit. The EcoPur® cartridge is sold separately.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eUnlike the 2\" FPT version of the MA-R4, this filter uses a 1.5-inch male thread and does not require an adapter for pre-2025 spas.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eCompatible Models - Current Generation (2025+)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cem\u003eLegacy Swim Spas:\u003c\/em\u003e LW 12, LW 15\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cem\u003eH2X Swim Spas:\u003c\/em\u003e Challenger 19D\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cem\u003eMP Swim Series:\u003c\/em\u003e Force D, Momentum, Momentum D, Signature Pro, Signature D\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eAlso Compatible with These Older Models\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cem\u003eH2X Swim Spas:\u003c\/em\u003e Challenger 15D, Challenger 18D, Challenger 18D Pro, Trainer 12, Trainer 14, Trainer 15, Trainer 15D, Trainer 17, Trainer 18, Trainer 18D, Trainer 19, Trainer 19D\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cem\u003eMP Swim Series:\u003c\/em\u003e Force, Impact, Momentum 50, Momentum 80, Momentum 80 D, Signature, Signature S\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eReplacement Schedule\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eReplace every 12 months under normal use, or every 6 months with heavier use. If you use the EcoPur® Charge Cartridge, replace it every 6 months.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cem\u003eDue to the nature of filtration products, we cannot accept returns on opened or incorrectly ordered items. Please verify your model and production year before purchasing.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Master Pool \u0026 Spa Supply","offers":[{"title":"Default Title","offer_id":45344531710089,"sku":null,"price":65.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0752\/6491\/7641\/files\/PMA-R4.jpg?v=1780076319"},{"product_id":"master-clear-pww50","title":"Master Clear® PWW50P3 Filter - 1.5\" MPT","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eThe PWW50P3 is a companion filter for a wide range of MasterSpas hot tubs and swim spas. Built with a 1.5-inch male pipe thread connection, it works alongside the MA-R4 1.5\" MPT primary filter to provide complete filtration coverage for your spa. The PWW50P3 does not house an EcoPur® Charge Mineral Cartridge and is a dedicated mechanical filtration filter.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eCompatible Models - Current Generation (2025+)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cem\u003eLegacy Swim Spas:\u003c\/em\u003e LW 12, LW 15\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cem\u003eMP Swim Series:\u003c\/em\u003e Force D, Momentum, Momentum D, Signature Pro, Signature D\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eAlso Compatible with These Older Models\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cem\u003eH2X Swim Spas:\u003c\/em\u003e Challenger 15D, Challenger 18D, Challenger 18D Pro, Challenger 19D, Trainer 12, Trainer 14, Trainer 15, Trainer 15D, Trainer 17, Trainer 18, Trainer 18D, Trainer 19, Trainer 19D\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cem\u003eMP Swim Series:\u003c\/em\u003e Force, Impact, Momentum 50, Momentum 80, Momentum 80 D, Signature, Signature S\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cstrong\u003eReplacement Schedule\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003eReplace every 12 months under normal use, or every 6 months with heavier use.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\"\u003e\u003cem\u003eDue to the nature of filtration products, we cannot accept returns on opened or incorrectly ordered items. Please verify your model and production year before purchasing.\u003c\/em\u003e\u003c\/p\u003e","brand":"Master Spas","offers":[{"title":"Default Title","offer_id":45344531972233,"sku":null,"price":60.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0752\/6491\/7641\/files\/PWW50_TOP.jpg?v=1772557969"},{"product_id":"master-spas-r4-15-mpt-two-pww50p3-filter-set","title":"MasterSpas R4 (1.5\" MPT) \u0026 Two PWW50P3 Filter Set","description":"\u003cp\u003e\u003c!--StartFragment --\u003e\u003c\/p\u003e\r\n\u003cp\u003eThis filter set is the \u003cstrong\u003eexact replacement\u003c\/strong\u003e required for specific \u003cem\u003eMaster Spas Trainer Series\u003c\/em\u003e, \u003cem\u003eChallenger Series\u003c\/em\u003e, and \u003cem\u003eMichael Phelps Swim Spas\u003c\/em\u003e. The R4 cartridge, built with a \u003cstrong\u003e1.5‑inch male pipe thread connector\u003c\/strong\u003e, is designed to house the EcoPur® Charge Mineral Cartridge inside. The two PWW50P3 cartridges install alongside the R4 to complete the filtration system, ensuring the water clarity and purification balance your swim spa was engineered for.\u003c\/p\u003e\r\n\u003cp\u003eIncludes:\u003c\/p\u003e\r\n\u003cul\u003e\r\n\u003cli\u003e\r\n\u003cstrong\u003e1 × Master Clear MA‑R4 Filter (1.5\" MPT)\u003c\/strong\u003e – Primary cartridge designed to capture dirt, debris, and particles.\u003c\/li\u003e\r\n\u003cli\u003e\r\n\u003cstrong\u003e1 × EcoPur® Charge Mineral Cartridge\u003c\/strong\u003e – Fits inside the R4 for mineral purification.\u003c\/li\u003e\r\n\u003cli\u003e\r\n\u003cstrong\u003e2 × Master Clear PWW50P3 Filters\u003c\/strong\u003e – Cartridges that work with the R4 to deliver full system performance.\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003cp\u003eImportant Fit Notes:\u003c\/p\u003e\r\n\u003cul\u003e\r\n\u003cli\u003e✅ Fits \u003cstrong\u003e2025 Trainer 12\u003c\/strong\u003e\r\n\u003c\/li\u003e\r\n\u003cli\u003e✅ Fits \u003cstrong\u003eall years MP Swim Force and Force D (except 2017)\u003c\/strong\u003e\r\n\u003c\/li\u003e\r\n\u003cli\u003e✅ Fits \u003cstrong\u003eall years MP Signature D\u003c\/strong\u003e\r\n\u003c\/li\u003e\r\n\u003cli\u003e✅ Fits \u003cstrong\u003e2024 and older Challenger 15 D\u003c\/strong\u003e\r\n\u003c\/li\u003e\r\n\u003cli\u003e✅ Fits \u003cstrong\u003e2024 and older Trainer 15 and Trainer 15 D\u003c\/strong\u003e\r\n\u003c\/li\u003e\r\n\u003cli\u003e✅ Fits \u003cstrong\u003eall years Challenger 18 D and 18 D Pro\u003c\/strong\u003e\r\n\u003c\/li\u003e\r\n\u003cli\u003e✅ Fits \u003cstrong\u003e2015 and newer Trainer 18\u003c\/strong\u003e\r\n\u003c\/li\u003e\r\n\u003cli\u003e✅ Fits \u003cstrong\u003eall Trainer 18 D\u003c\/strong\u003e\r\n\u003c\/li\u003e\r\n\u003cli\u003e✅ Fits \u003cstrong\u003eall MP Swim Signature D\u003c\/strong\u003e\r\n\u003c\/li\u003e\r\n\u003cli\u003e✅ Fits \u003cstrong\u003eall MP Swim Signature (except 2017)\u003c\/strong\u003e\r\n\u003c\/li\u003e\r\n\u003cli\u003e✅ Fits \u003cstrong\u003eall MP Swim Signature S\u003c\/strong\u003e\r\n\u003c\/li\u003e\r\n\u003cli\u003e❌ Not compatible with newer 2025+ models using the \u003cstrong\u003eR4 (2\" FPT) bundle\u003c\/strong\u003e\r\n\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003cp\u003e🗓️ \u003cstrong\u003eReplacement Schedule\u003c\/strong\u003e\u003c\/p\u003e\r\n\u003cul\u003e\r\n\u003cli\u003eFilters: Replace every \u003cstrong\u003e12 months\u003c\/strong\u003e with regular care, or every \u003cstrong\u003e6 months\u003c\/strong\u003e with heavier use\u003c\/li\u003e\r\n\u003cli\u003eEcoPur® cartridge (inside the R4): Replace every \u003cstrong\u003e6 months\u003c\/strong\u003e\r\n\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003cp\u003e \u003c\/p\u003e\r\n\u003cp\u003ePlease verify your swim spa’s model and production year before purchase. Due to the nature of the product, we cannot accept returns on opened or incorrectly ordered filter sets.\u003c\/p\u003e\r\n\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e","brand":"Master Spas","offers":[{"title":"Default Title","offer_id":45344534724745,"sku":null,"price":259.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0752\/6491\/7641\/files\/2_PWW50P3_1_PMA-R4_1_PMA-EPR_Filter_Set.jpg?v=1780684682"},{"product_id":"master-spas-r3-two-pww50-filter-set","title":"MasterSpas R3 \u0026 Two PWW50 Filter Set","description":"\u003cp\u003e\u003c!--StartFragment --\u003e\u003c\/p\u003e\r\n\u003cp\u003eThis filter set is the \u003cstrong\u003eexact replacement\u003c\/strong\u003e required for select \u003cem\u003eMichael Phelps Swim Spas\u003c\/em\u003e manufactured in 2017. The R3 cartridge, built with a male pipe thread connector, is designed to house the EcoPur® Charge Mineral Cartridge inside. The two PWW50P3 cartridges install alongside the R3 to complete the filtration system, ensuring the water clarity and purification balance your swim spa was engineered for.\u003c\/p\u003e\r\n\u003cp\u003eIncludes:\u003c\/p\u003e\r\n\u003cul\u003e\r\n\u003cli\u003e\r\n\u003cstrong\u003e1 × Master Clear MA‑R3 Filter (MPT)\u003c\/strong\u003e – Primary cartridge designed to capture dirt, debris, and particles.\u003c\/li\u003e\r\n\u003cli\u003e\r\n\u003cstrong\u003e1 × EcoPur® Charge Mineral Cartridge\u003c\/strong\u003e – Fits inside the R3 for mineral purification.\u003c\/li\u003e\r\n\u003cli\u003e\r\n\u003cstrong\u003e2 × Master Clear PWW50P3 Filters\u003c\/strong\u003e – Cartridges that work with the R3 to deliver full system performance.\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003cp\u003eImportant Fit Notes:\u003c\/p\u003e\r\n\u003cul\u003e\r\n\u003cli\u003e✅ Fits \u003cstrong\u003e2017 MP Swim Force and Force D\u003c\/strong\u003e\r\n\u003c\/li\u003e\r\n\u003cli\u003e✅ Fits \u003cstrong\u003e2017 MP Swim Signature\u003c\/strong\u003e\r\n\u003c\/li\u003e\r\n\u003cli\u003e❌ Not compatible with other production years or models outside this specification\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003cp\u003e🗓️ \u003cstrong\u003eReplacement Schedule\u003c\/strong\u003e\u003c\/p\u003e\r\n\u003cul\u003e\r\n\u003cli\u003eFilters: Replace every \u003cstrong\u003e12 months\u003c\/strong\u003e with regular care, or every \u003cstrong\u003e6 months\u003c\/strong\u003e with heavier use\u003c\/li\u003e\r\n\u003cli\u003eEcoPur® cartridge (inside the R3): Replace every \u003cstrong\u003e6 months\u003c\/strong\u003e\r\n\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003cp\u003e \u003c\/p\u003e\r\n\u003cp\u003ePlease verify your swim spa’s model and production year before purchase. Due to the nature of the product, we cannot accept returns on opened or incorrectly ordered filter sets.\u003c\/p\u003e\r\n\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e","brand":"Master Spas","offers":[{"title":"Default Title","offer_id":45344534823049,"sku":null,"price":239.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0752\/6491\/7641\/files\/R3_with_Eco.webp?v=1772582795"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0752\/6491\/7641\/collections\/mp-swim-spas-collection-logo.jpg?v=1779811182","url":"https:\/\/shop.masterspaswest.com\/collections\/michael-phelps-swim-spas.oembed","provider":"MasterSpas West","version":"1.0","type":"link"}