{"title":"Bottom End Kits","description":null,"products":[{"product_id":"ktm-250-300-complete-gasket-set-gasgas-husky","title":"KTM 250\/300 Complete Gasket Set (GasGas Husky)","description":"2 Stroke only\n\n250 from 2004 to current \n\n300 from 2017 to current \n\ncheck first if you have a TBI as they wont fit\n\nGasGas from 2021\n\n\n\nProx Engine Gasket Kit\n\n\n\nFull engine gasket kit, manufactured by Prox.\n\n\n\nIncludes seals engine, but does not include crankshaft seals.","brand":"Rutherford Racing","offers":[{"title":"Default Title","offer_id":42376941895755,"sku":"PROX.34-6317","price":105.3,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/5171\/7707\/files\/34-6317_19628ced-ae43-4801-b15d-2d2c87a8270f.jpg?v=1785516520"},{"product_id":"ktm-250-300-crank-bearing-and-seals-gasgas-husky","title":"KTM 250\/300 Crank Bearing And Seals (GasGas Husky)","description":"2 Stroke only\r\n\r\n250 from 2004 to current\r\n\r\n300 from 2017 to current\r\n\r\ncheck first if you have a TBI\r\n\r\nGasGas from 2021\r\n\r\nProx Crank Shaft Bearing And Seal Kit\r\n\r\nKit includes precision crank bearings (left and right), and double lip seals with teflon contact area.","brand":"Rutherford Racing","offers":[{"title":"Default Title","offer_id":42376941928523,"sku":"PROX.23-CBS63004","price":73.12,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/5171\/7707\/files\/23-CBS63004_1828cf3b-7a5a-4069-a399-59989e27c597.jpg?v=1785516022"},{"product_id":"ktm-250-300-connecting-rod-gasgas-husky","title":"KTM 250\/300 Connecting Rod (GasGas Husky)","description":"Prox Connecting Rod\n\n\n\n2 Stroke only\n\n250 from 2004 to current \n\n300 from 2017 to current \n\ncheck first if you have a TBI\n\nGasGas from 2021\n\n\n\nProx Connecting Rod Kits are made out of the toughest alloys available today.\n\n\n\nO.E. specifications and tolerances are meticulously maintained, a guarantee for easy installation and trouble free performance.\n\n\n\nProX Connecting Rod Kits come complete with Crankpin, Big-End Bearing, Small End Bearing and Washers.","brand":"Rutherford Racing","offers":[{"title":"Default Title","offer_id":42376941961291,"sku":"PROX.03-6323","price":126.1,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/5171\/7707\/files\/03-6323_0f58ef24-a9ab-4a80-bc9b-57ba46a110a7.jpg?v=1785516521"},{"product_id":"ktm-crankshaft-repair-kit","title":"KTM CRANKSHAFT REPAIR KIT","description":"KTM Crankshaft repair kit\r\n\r\n \r\n\r\nThis part replaces 00050002301.\r\n\r\n(54830018488)\r\n\r\nGenuine KTM OEM replacement parts.","brand":"Rutherford Racing","offers":[{"title":"Default Title","offer_id":42376984133707,"sku":"54830018488","price":78.12,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/5171\/7707\/files\/1660126605_cf858e13-c0c6-4a1d-a395-62919a7b8e52.jpg?v=1785518901"},{"product_id":"crankshaft-tpi-tbi-2017-on-ktm-250-300","title":"Crankshaft TPI TBI 2017 on KTM 250\/300","description":"Crankshaft Assembly for KTM group 250\/300 2t bikes Gasgas, KTM, Husky","brand":"Rutherford Racing","offers":[{"title":"Default Title","offer_id":42377004875851,"sku":"HR00125","price":329.92,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/5171\/7707\/files\/hot_rods_crankshaft_ktm_husqvarna_gas_gas250cc300cc20172021_750x750_cebf9b1f-a515-438b-997f-2e13bc873321.jpg?v=1785435679"},{"product_id":"crank-seal-set-ktm-250-90-20-prox-42-6320","title":"Crank Seal Set KTM 250 90on ProX 42.6320","description":"Crank seal set for KTM 250, compatible with models from 1990on","brand":"Rutherford Racing","offers":[{"title":"Default Title","offer_id":42377004908619,"sku":"42-6320","price":16.03,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/5171\/7707\/files\/stock104228_1_a572b277-2a69-47e3-bdac-e1f3679bc169.jpg?v=1785518997"},{"product_id":"genuine-ktm-tbi-crankshaft-nut-m18x1-5-left-hand-thread-0910001801001s","title":"Genuine KTM TPI TBI CrankShaft Nut M18X1.5 Left Hand Thread 0910001801001S","description":"","brand":"Rutherford Racing","offers":[{"title":"Default Title","offer_id":42377028567115,"sku":"0910001801001S","price":8.45,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/5171\/7707\/files\/bf0ddd41-5191-4ff4-95b6-43faafb27031-27843-00000972cd335b8e_file-scaled_a7dee8cf-b967-4513-949c-bdeea42b1b1f.jpg?v=1785500467"},{"product_id":"hot-rods-ktm-husqvarna-17-21-250-300-tpi-models-transmission-bearing-kit","title":"Hot Rods KTM Husqvarna 17-21 250-300 TPI Models Transmission Bearing Kit","description":"\u003cstrong\u003eHot Rods - Transmission Bearing Kits\u003c\/strong\u003e\r\n\u003cul\u003e\r\n \t\u003cli\u003eA must have for any new transmission or engine case installation or repair\u003c\/li\u003e\r\n \t\u003cli\u003eIncludes trusted Hot Rods' bearings for the primary and secondary shafts of the transmission, along with the special needle bearing for the shift drum, and the output shaft collar and washer\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003cstrong\u003eFor Models:\u003c\/strong\u003e\r\n\r\n250 SX (17-24); 250 XC (17-19); 250 XC TPI (20-21); 300 XC (19); 300 XC TPI (20-21); 300 XC-W (17-18); 300 XC-W TPI (18-21); TC 250 (18-21); TE 250 (17-18); TE 250 i (18-21); TE 300 (17-18); TE 300 i (19-21); TE 300 i Jarvis Edition (20-21); TX 300 (17-19); TX 300 i (20-21)","brand":"Rutherford Racing","offers":[{"title":"Default Title","offer_id":42377119825995,"sku":"HR00088","price":104.17,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/5171\/7707\/files\/b7ca8eb2-6fb3-458e-870d-51d35c1173e3-2501-000000b94e0ee38b_file-scaled_0bffe970-5766-407d-aeb5-c0437a3ed14f.jpg?v=1785495555"},{"product_id":"hot-rods-ktm-sx125-sx150-2016-2019-transmission-bearing-rebuild-kit","title":"Hot Rods KTM SX125 SX150 2016-2019 Transmission Bearing Rebuild Kit","description":"KTM\r\n\u003cul\u003e\r\n \t\u003cli\u003e125 SX (2016-2018)\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003cul\u003e\r\n \t\u003cli\u003e150 SX (2016-2018)\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003cstrong\u003eKey Features:\u003c\/strong\u003e\r\n\u003cul\u003e\r\n \t\u003cli\u003eEssential for any transmission or engine case installation or repair.\u003c\/li\u003e\r\n \t\u003cli\u003eIncludes premium Hot Rods bearings for the primary and secondary transmission shafts, special needle bearing for the shift drum, output shaft collar, and lock washer.\u003c\/li\u003e\r\n \t\u003cli\u003eDesigned to save time and simplify the repair process by offering a complete kit.\u003c\/li\u003e\r\n \t\u003cli\u003eMeets or exceeds OEM standards as a direct OEM replacement.\u003c\/li\u003e\r\n \t\u003cli\u003eQuality guaranteed by Hot Rods for high-performance applications.\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003cstrong\u003eIncluded Items:\u003c\/strong\u003e\r\n\u003cul\u003e\r\n \t\u003cli\u003e(2) Bearings: 17x35x9\u003c\/li\u003e\r\n \t\u003cli\u003e(1) Bearing: 25x37x7\u003c\/li\u003e\r\n \t\u003cli\u003e(1) Bearing: 17x30x7\u003c\/li\u003e\r\n \t\u003cli\u003e(1) Bearing: 25x52x15\u003c\/li\u003e\r\n \t\u003cli\u003e(1) Bearing: 20x42x8\u003c\/li\u003e\r\n \t\u003cli\u003e(1) Collar\u003c\/li\u003e\r\n \t\u003cli\u003e(1) Retaining ring\u003c\/li\u003e\r\n \t\u003cli\u003eInstructions for installation\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003cstrong\u003eNote:\u003c\/strong\u003e This kit does not include the water pump bearing, counter balancer bearings, or engine oil seal kit.","brand":"Rutherford Racing","offers":[{"title":"Default Title","offer_id":42377119924299,"sku":"TBK0108","price":99.65,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/5171\/7707\/files\/99cff7ef-3cfa-4487-9ec1-b8fe0ccb53ea-2501-000000ba511ac4d2_file-scaled.jpg?v=1777689959"},{"product_id":"pro-x-crankshaft-bearing-and-seal-kit-ktm-98-23-144-150-200-husaberg-12-14-te125","title":"PRO X Crankshaft Bearing And Seal Kit KTM 98-23 144 150 200 Husaberg 12-14 TE125","description":"\u003cdiv class=\"ng-tns-c108-8 m-accordion m-accordion__description m-accordion--is-open\"\u003e\r\n\u003cdiv class=\"m-accordion__content ng-tns-c108-8 ng-trigger ng-trigger-toggleHeight\"\u003e\r\n\u003cdiv class=\"m-accordion__content-inner ng-tns-c108-8\"\u003e\u003carticle class=\"ng-tns-c108-8\"\u003e\r\n\u003cdiv class=\"ng-tns-c108-8\"\u003e\r\n\u003cdiv class=\"ng-star-inserted\"\u003eComplete set of the main bearings and seals required for a replacement.\r\nProX main bearings of absolute top quality!\r\nMade in Japan out of the leading OEM factories for engine parts for many of the major motorcycle manufacturers, you can be sure that they meet the same specifications as your original stock part.\r\nProX main bearings and seals fit all OEM parts and aftermarket parts.\r\n\r\nMain bearings are the bearings that are mounted in the engine block and hold the crankshaft in place. During an engine overhaul, they should always be replaced.\u003c\/div\u003e\r\n\u003c\/div\u003e\r\n\u003c\/article\u003e\u003c\/div\u003e\r\n\u003c\/div\u003e\r\n\u003c\/div\u003e\r\n\u003cdiv class=\"ng-tns-c108-14 m-accordion\"\u003e\r\n\u003cdiv class=\"m-accordion__header ng-tns-c108-14\"\u003e\r\n\u003ch4 class=\"ng-tns-c108-14\"\u003e\u003c\/h4\u003e\r\n\u003c\/div\u003e\r\n\u003cdiv class=\"m-accordion__content ng-tns-c108-14 ng-trigger ng-trigger-toggleHeight\"\u003e\r\n\u003cdiv class=\"m-accordion__content-inner ng-tns-c108-14\"\u003e\u003carticle class=\"ng-tns-c108-14\"\u003e\r\n\u003cdiv class=\"ng-tns-c108-14\"\u003e\u003c\/div\u003e\r\n\u003c\/article\u003e\u003c\/div\u003e\r\n\u003c\/div\u003e\r\n\u003c\/div\u003e","brand":"Rutherford Racing","offers":[{"title":"Default Title","offer_id":42377119957067,"sku":"CBS62001","price":77.31,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/5171\/7707\/files\/32354705-3195-426a-83ec-332582ca2c1a-2501-000000bc83e1fc36_file-scaled.jpg?v=1777689961"},{"product_id":"ibex-ktm-group-300-tpi-tbi-300-grams-heavier-weighted-crank-with-bearings","title":"IBEX KTM Group Factory Spec 250 \u0026 300 TPI TBI Heavy Weighted Crank with Bearings","description":"\u003cp data-path-to-node=\"2\"\u003eIBEX Precision-Engineered Heavy Crankshaft\nUnlock the \"factory secret\" that has powered KTM’s elite riders to the top of the podium. During our time building the 2025 World Championship bike for Graham Jarvis, we saw firsthand how a heavy crank transforms a bike's behavior. Now, we’ve engineered a production version that brings this professional-grade technology to every rider.\nWhy a Heavy Crank Beats a Flywheel Weight\nWhile bolt-on flywheel weights are a common modification, they are limited by their uniform weight distribution. A heavy crank is a fundamental engine upgrade that offers technical advantages a flywheel cannot:\nOptimized Balance Factor: By manufacturing the crank webs with additional mass, we can precisely adjust the balance factor. This allows us to counteract the reciprocating forces of the piston more effectively, reducing vibration and improving engine longevity.\nRotational Inertia \u0026amp; Traction: A heavy crank increases \"crank mass\" rather than just \"external mass.\" This provides a more planted feel and smoother power delivery, allowing the rear tire to find grip in the slickest, most technical conditions.\nStrategic Mass Placement: Unlike flywheels that add weight to the end of the shaft, a heavy crank places mass directly in the center of the engine’s rotating assembly, maintaining better gyroscopic stability and centralizing mass.\nProfessional Results without the Price Tag\nCustom-modifying a stock crank to these specifications is a labor-intensive process involving tungsten inserts and precision machining—traditionally costing riders upwards of £2,500.\nWe have eliminated the middleman. By casting and machining these cranks to be heavy from the factory, we have removed the need for expensive post-production labor. You get the exact same \"Jarvis-spec\" feeling and balance at a fraction of the cost of a custom build.\nTechnical Specifications\nDirect Replacement: Precision-fit for KTM 250 and 300 TPI and TBI engines.\nEngineered Inertia: Designed to improve low-end torque and prevent stalling in extreme terrain And give the best and smoothest power delivery the same as the KTM factory team uses.\nBalanced Performance: Dynamically balanced to reduce engine stress and rider fatigue.\u003c\/p\u003e","brand":"Rutherford Racing","offers":[{"title":"Default Title","offer_id":42958617641035,"sku":"IBEXHEAVYCRANK","price":500.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/5171\/7707\/files\/a1d5c5e9-02f3-403c-b6c4-17aa3bb71c33-17053-000003af497d684e_file-scaled_78f3fe04-cda8-4012-8cee-a751f02e7073.jpg?v=1785500767"},{"product_id":"ibex-ktm-group-300-tpi-tbi-standard-weighted-crank-with-bearings","title":"IBEX KTM group 250 300 TPI TBI Crank with Bearings.","description":"Restore that factory-fresh feel and crisp throttle response with the \u003cb data-path-to-node=\"2\" data-index-in-node=\"69\"\u003eIBEX Standard Weight Crankshaft\u003c\/b\u003e. Engineered to match the exact weight and inertia specifications of your original equipment, this assembly is the premier choice for riders who love the agile, snappy, and aggressive power delivery that the modern 300cc fuel-injected engines are famous for.","brand":"Rutherford Racing","offers":[{"title":"Default Title","offer_id":42958617673803,"sku":"IBEXSTANDARDCRANK","price":333.33,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/5171\/7707\/files\/bdebaa01-aca6-4962-a5c4-5767a8455bbe-17053-000003afc4d77b4e_file-scaled_532c1547-3532-4def-88b3-62f0b42c4a7d.jpg?v=1785500766"}],"url":"https:\/\/rutherfordracing.co.uk\/collections\/product_cat-bottom-end-kits.oembed","provider":"Rutherford Racing","version":"1.0","type":"link"}