{"product_id":"all-balls-crankshaft-bearing-and-seal-kit-for-polaris-trail-boss-and-big-boss-250-part-24-1077","title":"ALL BALLS Crankshaft Bearing and Seal Kit for Polaris Trail Boss and Big Boss 250 (Part #24-1077)","description":"\u003cp\u003eUpgrade your Polaris ATV with the ALL BALLS Crankshaft Bearing and Seal Kit, designed specifically for models including the 1988-1992 Polaris Trail Boss 250 and Big Boss 250 6X6. This comprehensive kit ensures optimal engine performance by replacing worn or damaged bearings and seals, restoring smooth operation and extending engine life. Crafted with precision Japanese bearings from Koyo and Nachi, the kit guarantees durability and reliable performance under demanding conditions. The high-quality crankshaft seals feature a carbon\/fluorocarbon lip material for excellent resistance to wear and heat, coupled with stainless steel garter springs for enhanced sealing integrity. This combination significantly reduces startup friction, improving dry start performance and minimizing crank pin wear, which are critical factors in maintaining engine health over time. Proper installation of these components helps to prevent oil leaks and contamination, ensuring your ATV runs smoothly and efficiently across challenging terrains. Whether you're restoring an older model or performing routine maintenance, the ALL BALLS kit provides the necessary components to keep your Polaris ATV operating at peak performance. Designed for an easy fit, this kit is an essential upgrade for ATV enthusiasts seeking quality, reliability, and longevity from their engine components.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eKoyo and Nachi precision Japanese crank bearings for durability and reliable performance\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eCrankshaft seals with a carbon\/fluorocarbon pad on the seal lip for enhanced wear resistance\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eStainless steel garter springs improve sealing integrity and longevity\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eReduces startup friction, enhancing dry start performance\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eHelps minimize crank pin wear for extended engine life\u003c\/li\u003e\u003c\/ul\u003e\u003cbr\u003e\nFitment\u003cbr\u003e\nPolaris Big Boss 250 4X6  1989\u003cbr\u003e\nPolaris Big Boss 250 4X6  1990\u003cbr\u003e\nPolaris Big Boss 250 4X6  1991\u003cbr\u003e\nPolaris Big Boss 250 4X6  1992\u003cbr\u003e\nPolaris Big Boss 250 6X6  1991\u003cbr\u003e\nPolaris Big Boss 250 6X6  1992\u003cbr\u003e\nPolaris Cyclone 250X  1987\u003cbr\u003e\nPolaris Scrambler 250  1985\u003cbr\u003e\nPolaris Scrambler 250  1986\u003cbr\u003e\nPolaris Trail Blazer 250  1990\u003cbr\u003e\nPolaris Trail Blazer 250  1991\u003cbr\u003e\nPolaris Trail Blazer 250  1992\u003cbr\u003e\nPolaris Trail Boss 250 2X4  1985\u003cbr\u003e\nPolaris Trail Boss 250 2X4  1986\u003cbr\u003e\nPolaris Trail Boss 250 2X4  1987\u003cbr\u003e\nPolaris Trail Boss 250 2X4  1988\u003cbr\u003e\nPolaris Trail Boss 250 2X4  1989\u003cbr\u003e\nPolaris Trail Boss 250 2X4  1990\u003cbr\u003e\nPolaris Trail Boss 250 2X4  1991\u003cbr\u003e\nPolaris Trail Boss 250 2X4  1992\u003cbr\u003e\nPolaris Trail Boss 250 4X4  1987\u003cbr\u003e\nPolaris Trail Boss 250 4X4  1988\u003cbr\u003e\nPolaris Trail Boss 250 4X4  1989\u003cbr\u003e\nPolaris Trail Boss 250 4X4  1990\u003cbr\u003e\nPolaris Trail Boss 250 4X4  1991\u003cbr\u003e\nPolaris Trail Boss 250 4X4  1992\u003cbr\u003e\nPolaris Trail Boss 250R\/Es  1988\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\n\u003c\/tbdoy\u003e\n\u003c\/table\u003e\u003cbr\u003e","brand":"ALL BALLS","offers":[{"title":"Default Title","offer_id":47724063326371,"sku":"22-41077","price":76.99,"currency_code":"USD","in_stock":true}],"url":"https:\/\/mo-moto.com\/products\/all-balls-crankshaft-bearing-and-seal-kit-for-polaris-trail-boss-and-big-boss-250-part-24-1077","provider":"Mo-Moto","version":"1.0","type":"link"}