{"product_id":"fmf-4-stroke-exhaust-wash-plug-011299","title":"FMF - Four Stroke Exhaust Wash Plug","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003c\/p\u003e\n\u003ch1\u003eFMF 4 Stroke Exhaust Wash Plug\u003c\/h1\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"1\"\u003e\u003cspan\u003eThe FMF 4-Stroke Exhaust Wash Plug (011299) is a tapered rubber muffler seal engineered to block water,\u003c\/span\u003e\u003cspan\u003e soap,\u003c\/span\u003e\u003cspan\u003e and condensation from entering the exhaust system during motorcycle washing,\u003c\/span\u003e\u003cspan\u003e storage,\u003c\/span\u003e\u003cspan\u003e and transport.\u003c\/span\u003e\u003cspan\u003e Modern 4-stroke off-road,\u003c\/span\u003e\u003cspan\u003e dual-sport,\u003c\/span\u003e\u003cspan\u003e and adventure mufflers feature large-diameter straight-through perforated cores wrapped in fiberglass sound-absorbing matting.\u003c\/span\u003e\u003cspan\u003e Spraying high-pressure water into the muffler outlet saturates the packing material—destroying its acoustic dampening properties and inducing premature blowout—while allowing water to pool in header low points or migrate past open exhaust valves directly into the combustion chamber and crankcase oil.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"2\"\u003e\u003cspan\u003eMolded from flexible,\u003c\/span\u003e\u003cspan\u003e heavy-duty synthetic rubber with a multi-ribbed conical profile,\u003c\/span\u003e\u003cspan\u003e the 011299 plug compresses securely into exhaust outlets ranging from 33mm to 60mm in inner diameter.\u003c\/span\u003e\u003cspan\u003e It creates a watertight barrier that withstands pressure washer spray and prevents moisture intrusion from ambient humidity changes during storage.\u003c\/span\u003e\u003cspan\u003e A high-visibility woven FMF warning streamer is tethered to the plug via a metal keyring to serve as a clear visual reminder to remove the plug before starting the engine.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4 dir=\"ltr\" data-path-to-node=\"3\"\u003eFeatures:\u003c\/h4\u003e\n\u003cul dir=\"ltr\" data-path-to-node=\"4\"\u003e\n\u003cli\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"4,0,0\"\u003e\u003cb data-path-to-node=\"4,0,0\" data-index-in-node=\"0\"\u003eWatertight Tapered Rib Design:\u003c\/b\u003e\u003cspan\u003e Stepped conical rubber ribs compress to seal muffler exit bores from 33mm to 60mm,\u003c\/span\u003e\u003cspan\u003e preventing water from saturating internal fiberglass packing or reaching exhaust valves.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"4,1,0\"\u003e\u003cb data-path-to-node=\"4,1,0\" data-index-in-node=\"0\"\u003eHigh-Visibility Warning Streamer:\u003c\/b\u003e\u003cspan\u003e Attached bright FMF fabric ribbon alerts riders to remove the plug prior to starting the motorcycle,\u003c\/span\u003e\u003cspan\u003e preventing exhaust backpressure blowouts.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"4,2,0\"\u003e\u003cb data-path-to-node=\"4,2,0\" data-index-in-node=\"0\"\u003eHeavy-Duty Elastomer Construction:\u003c\/b\u003e\u003cspan\u003e Formulated from durable,\u003c\/span\u003e\u003cspan\u003e oil- and chemical-resistant molded rubber that maintains elasticity across wide temperature swings without cracking.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"4,3,0\"\u003e\u003cb data-path-to-node=\"4,3,0\" data-index-in-node=\"0\"\u003eUniversal 4-Stroke Fitment:\u003c\/b\u003e\u003cspan\u003e Fits both OEM stock silencers and aftermarket slip-on or full-system exhausts across 250cc to 1300cc+ four-stroke platforms.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"4,4,0\"\u003e\u003cb data-path-to-node=\"4,4,0\" data-index-in-node=\"0\"\u003eCondensation \u0026amp; Pest Barrier:\u003c\/b\u003e\u003cspan\u003e Seals the exhaust tract during winterization,\u003c\/span\u003e\u003cspan\u003e trailer transport,\u003c\/span\u003e\u003cspan\u003e or humid garage storage to prevent internal corrosion and rodent nesting.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"4,5,0\"\u003e\u003cb data-path-to-node=\"4,5,0\" data-index-in-node=\"0\"\u003eIntegrated Metal Keyring Tether:\u003c\/b\u003e\u003cspan\u003e Corrosion-resistant ring secures the warning streamer firmly to the plug base for easy extraction.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4 dir=\"ltr\" data-path-to-node=\"5\"\u003eWhat's in the Box:\u003c\/h4\u003e\n\u003cul dir=\"ltr\" data-path-to-node=\"6\"\u003e\n\u003cli\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"6,0,0\"\u003e\u003cspan\u003e1x FMF 4-Stroke Tapered Rubber Exhaust Wash Plug (Part #011299)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"6,1,0\"\u003e\u003cspan\u003e1x Pre-Attached FMF High-Visibility Warning Streamer \u0026amp; Keyring\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4 dir=\"ltr\" data-path-to-node=\"7\"\u003eFitment Notes:\u003c\/h4\u003e\n\u003cul dir=\"ltr\" data-path-to-node=\"8\"\u003e\n\u003cli\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"8,0,0\"\u003e\u003cb data-path-to-node=\"8,0,0\" data-index-in-node=\"0\"\u003eExhaust Outlet Compatibility:\u003c\/b\u003e\u003cspan\u003e Fits round and oval muffler exhaust outlets with an internal diameter (ID) between \u003c\/span\u003e\u003cb data-path-to-node=\"8,0,0\" data-index-in-node=\"113\"\u003e33mm (1.30 in)\u003c\/b\u003e\u003cspan\u003e and \u003c\/span\u003e\u003cb data-path-to-node=\"8,0,0\" data-index-in-node=\"132\"\u003e60mm (2.36 in)\u003c\/b\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"8,1,0\"\u003e\u003cb data-path-to-node=\"8,1,0\" data-index-in-node=\"0\"\u003eMotorcycle Platforms:\u003c\/b\u003e\u003cspan\u003e Compatible with 4-stroke motocross,\u003c\/span\u003e\u003cspan\u003e cross-country\/enduro,\u003c\/span\u003e\u003cspan\u003e dual-sport,\u003c\/span\u003e\u003cspan\u003e and adventure motorcycles (including FMF Q4,\u003c\/span\u003e\u003cspan\u003e Powercore 4,\u003c\/span\u003e\u003cspan\u003e Factory 4.\u003c\/span\u003e\u003cspan\u003e1,\u003c\/span\u003e\u003cspan\u003e and OEM mufflers).\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"8,2,0\"\u003e\u003cb data-path-to-node=\"8,2,0\" data-index-in-node=\"0\"\u003eSpark Arrestor \u0026amp; Quiet Core Note:\u003c\/b\u003e\u003cspan\u003e Compatible with most mufflers running standard USFS screen-type spark arrestors or quiet inserts,\u003c\/span\u003e\u003cspan\u003e provided the exit aperture is at least 33mm in diameter.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"8,3,0\"\u003e\u003cb data-path-to-node=\"8,3,0\" data-index-in-node=\"0\"\u003e2-Stroke Fitment Note:\u003c\/b\u003e\u003cspan\u003e For smaller-bore 2-stroke silencers (typically 22mm to 33mm ID),\u003c\/span\u003e\u003cspan\u003e use the FMF 2-Stroke Exhaust Wash Plug (Part #011300).\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003e\u003cmeta charset=\"utf-8\"\u003e\u003c\/span\u003e\n\u003cp dir=\"ltr\" data-path-to-node=\"12\"\u003e\u003cb data-path-to-node=\"12\" data-index-in-node=\"0\"\u003eExhaust Cool-Down Rule (Preventing Melted Rubber):\u003c\/b\u003e\u003cspan\u003e Never insert a rubber wash plug into a hot muffler immediately after riding.\u003c\/span\u003e\u003cspan\u003e Four-stroke titanium and stainless steel end caps routinely exceed 350°F–450°F after trail or highway use.\u003c\/span\u003e\u003cspan\u003e Inserting the plug while the metal is hot will melt the rubber ribs onto the end cap,\u003c\/span\u003e\u003cspan\u003e ruining the seal and leaving scorched residue on the exhaust tip.\u003c\/span\u003e\u003cspan\u003e Always allow the exhaust system to cool to ambient temperature before inserting the plug and starting your wash routine.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eProjectile Warning:\u003c\/b\u003e Always heed the warning streamer. If you forget to pull the plug and manage to kick the bike over with a strong spark, the engine compression will fire that rubber plug out of the exhaust tip, potentially damaging whatever is parked directly behind your motorcycle in the garage.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cmeta charset=\"utf-8\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003ca title=\"Shop for FMF exhaust and other parts and accessories at TMBR MOTO. TW200 parts and accessories available at TMBR MOTO\" href=\"https:\/\/www.tmbrmoto.com\/collections\/fmf\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0622\/5720\/1317\/files\/FMF_BANNERS_b47a5e51-8c77-4a22-a28b-b8b700a6a0ef.jpg?v=1779296464\" alt=\"\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0622\/5720\/1317\/files\/Made_In_The_USA_24865b83-5069-42c1-b4bc-9e28ee4fe2cb.jpg?v=1719961954\" alt=\"\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003ePart Number: 011299\u003c\/p\u003e","brand":"TMBR MOTO","offers":[{"title":"Default Title","offer_id":51175026950309,"sku":"FMF-4T-WSH-PLG","price":6.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0622\/5720\/1317\/files\/FMF_4_Stroke_Exhaust_Wash_Plug_011299.png?v=1794512602","url":"https:\/\/www.tmbrmoto.com\/products\/fmf-4-stroke-exhaust-wash-plug-011299","provider":"TMBR MOTO","version":"1.0","type":"link"}