{"product_id":"size-c-54-21mm-piston-kit-for-ktm-1994-2000-125-sx-125-exc-std-bore-54-25mm","title":"Size C (54.21mm) Piston Kit for KTM 1994-2000 125 SX \u0026 125 EXC STD Bore 54.25mm","description":"\u003ch2\u003eSize C (54.21mm) Piston Kit for KTM\u003c\/h2\u003e\u003cp\u003eThis Size C (54.21mm) piston kit is a replacement piston assembly for KTM 125 SX and 125 EXC motorcycles from 1994 to 2000, designed to restore engine compression and performance with a standard bore of 54.25mm.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThis Size C (54.21mm) piston kit provides a direct-fit replacement for KTM 125 SX and 125 EXC models, delivering reliable power and durability for off-road riding. Manufactured to precise tolerances, this piston kit ensures consistent combustion and long service life, making it an ideal choice for rebuilding your KTM two-stroke engine.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003ePrecision-machined from high-strength aluminum alloy for reduced weight and improved thermal conductivity\u003c\/li\u003e\n\u003cli\u003eIncludes piston rings, wrist pin, and circlips for a complete top-end rebuild\u003c\/li\u003e\n\u003cli\u003eSize C (54.21mm) specification matches factory dimensions for KTM 125 engines\u003c\/li\u003e\n\u003cli\u003eDesigned for a standard bore of 54.25mm to maintain proper clearance\u003c\/li\u003e\n\u003cli\u003eTested for durability under high-RPM motocross and enduro conditions\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003efor KTM 125 SX (1994-2000)\u003c\/li\u003e\n\u003cli\u003efor KTM 125 EXC (1994-2000)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eMotocross racing on closed tracks\u003c\/li\u003e\n\u003cli\u003eEnduro and trail riding through rugged terrain\u003c\/li\u003e\n\u003cli\u003eEngine top-end rebuilds for restored performance\u003c\/li\u003e\n\u003cli\u003eCompetition and recreational two-stroke maintenance\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eSpecs At A Glance\u003c\/h4\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart Number(s)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSize C (54.21mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBore Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e54.25mm (standard)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompatible Models\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eKTM 125 SX, 125 EXC (1994-2000)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch4\u003eGood To Know\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Does this piston kit include a wrist pin bearing? \u003cstrong\u003eA:\u003c\/strong\u003e The kit includes the wrist pin and circlips but does not include a wrist pin bearing; you will need to reuse or replace the bearing separately based on your engine condition.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Is this piston compatible with a Big Bore kit? \u003cstrong\u003eA:\u003c\/strong\u003e This Size C piston is designed for standard 54.25mm bore only and should not be used with overbore or big bore cylinders unless specifically noted.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eSlight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.\u003c\/em\u003e\u003c\/p\u003e","brand":"Solid Spare","offers":[{"title":"Default Title","offer_id":44890407174230,"sku":"SZ1F10852","price":113.29,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/1_d15edde1-0e0e-4953-8328-53eb32624b91.jpg?v=1781139011","url":"https:\/\/www.solidspare.com\/products\/size-c-54-21mm-piston-kit-for-ktm-1994-2000-125-sx-125-exc-std-bore-54-25mm","provider":"Solid Spare","version":"1.0","type":"link"}