{"title":"IAME KA100 Piston \u0026 Ring Parts","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cspan\u003eIAME KA100 Piston \u0026amp; Ring Parts Collection\u003c\/span\u003e\u003c\/p\u003e","products":[{"product_id":"iame-ka100-piston-pin-grade-b","title":"(50) IAME KA100 Piston Pin 14x39mm – Grade \"B\"","description":"\u003cp\u003eThe \u003cstrong\u003eIAME KA100 piston pin (Grade \"B\")\u003c\/strong\u003e is a factory OEM wrist pin measuring 14mm diameter by 39mm length for the KA100 100cc reed-jet kart engine. The \"B\" grade designation indicates a specific tolerance band within IAME's manufacturing classification system. Selecting the correct pin grade ensures proper fit between the piston pin bore and the small end bearing, which is critical for reliable engine operation and longevity.\u003c\/p\u003e\n\u003cp\u003eThis piston pin fits all IAME KA100 pistons and connects the piston to the connecting rod via the small end roller cage. Each pin is retained by two 1.0mm circlips (part number 10343, sold separately). When rebuilding your KA100 top end, always inspect the pin for scoring, discoloration, or uneven wear patterns. Reuse is acceptable if the pin passes visual and dimensional inspection, but replacement is recommended during a full rebuild.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 14mm diameter x 39mm length\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrade:\u003c\/strong\u003e \"B\" tolerance band\u003cstrong\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1 pin\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCirclips:\u003c\/strong\u003e Sold separately (10343)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAlways match the piston pin grade to your piston and small end bearing clearance specifications per the IAME service manual. If unsure which grade to order, consult your engine builder. Available at CMC Karting.\u003c\/p\u003e","brand":"IAME USA","offers":[{"title":"Default Title","offer_id":47785477144797,"sku":"B-10321-B","price":35.38,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0731\/6770\/0189\/files\/CMCKA100PistonWristPin_9447d9b3-d2a3-47c9-9ba0-97d0ff35cff9.png?v=1776176272"},{"product_id":"iame-ka100-piston-pin-grade-r","title":"(50) IAME KA100 Piston Pin 14x39mm – Grade \"R\"","description":"\u003cp\u003eThe \u003cstrong\u003eIAME KA100 piston pin (Grade \"R\")\u003c\/strong\u003e is a factory OEM wrist pin measuring 14mm diameter by 39mm length for the KA100 100cc reed-jet kart engine. The \"R\" grade designation indicates a specific tolerance band within IAME's manufacturing classification system. Selecting the correct pin grade ensures proper fit between the piston pin bore and the small end bearing, which is critical for reliable engine operation and longevity.\u003c\/p\u003e\n\u003cp\u003eThis piston pin fits all IAME KA100 pistons and connects the piston to the connecting rod via the small end roller cage. Each pin is retained by two 1.0mm circlips (part number 10343, sold separately). When rebuilding your KA100 top end, always inspect the pin for scoring, discoloration, or uneven wear patterns. Reuse is acceptable if the pin passes visual and dimensional inspection, but replacement is recommended during a full rebuild.\u003cstrong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 14mm diameter x 39mm length\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrade:\u003c\/strong\u003e \"R\" tolerance band\u003cstrong\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1 pin\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCirclips:\u003c\/strong\u003e Sold separately (10343)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAlways match the piston pin grade to your piston and small end bearing clearance specifications per the IAME service manual. If unsure which grade to order, consult your engine builder. Available at CMC Karting.\u003c\/p\u003e","brand":"IAME USA","offers":[{"title":"Default Title","offer_id":47785477177565,"sku":"B-10321-R","price":35.38,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0731\/6770\/0189\/files\/CMCKA100PistonWristPin_9447d9b3-d2a3-47c9-9ba0-97d0ff35cff9.png?v=1776176272"},{"product_id":"iame-ka100-piston-pin-circlip","title":"(51) IAME KA100 Piston Pin Circlip – 1.0mm","description":"\u003cp\u003eThe \u003cstrong\u003eIAME KA100 piston pin circlip\u003c\/strong\u003e is the factory OEM retaining clip that secures the piston pin (wrist pin) inside the piston bore. Each KA100 piston uses two circlips — one on each side — to prevent the pin from walking laterally and contacting the cylinder wall. This circlip measures 1.0mm in wire diameter and is designed for the 14mm piston pin bore of the KA100.\u003c\/p\u003e\n\u003cp\u003eCirclips are single-use components and must be replaced every time the piston pin is removed. Reusing circlips risks improper seating, which can lead to catastrophic engine failure if the pin escapes and scores the cylinder bore. Always order fresh circlips before any top-end service two per piston.\u003cstrong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1 circlip (order 2 per piston)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNever reuse circlips. They lose their spring tension once removed and may not seat properly in the groove. Keep a handful of spares in your toolbox. Available at CMC Karting.\u003c\/p\u003e","brand":"IAME USA","offers":[{"title":"Default Title","offer_id":47785477210333,"sku":"10343","price":2.07,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0731\/6770\/0189\/files\/CMCKA100PistonCirclip.png?v=1776176058"},{"product_id":"iame-ka100-piston","title":"(52A) IAME KA100 Piston Kit with Ring – Select Weight","description":"\u003cp\u003eThe \u003cstrong\u003eIAME KA100 piston\u003c\/strong\u003e is the factory OEM replacement piston for the KA100 100cc reed-jet two-stroke kart engine. Each piston is manufactured by IAME to exact specifications and individually weighed, with the weight stamped or marked on the piston. Available in 17 weight selections from 48.20g to 48.52g in 0.02g increments, allowing engine builders to select a piston that matches their target assembly weight and balance specifications.\u003c\/p\u003e\n\u003cp\u003eThis piston fits all current IAME KA100 engines and is used across all major North American sanctioning bodies including SKUSA, USPKS, and WKA. The piston accepts a 14mm wrist pin (sold separately in \"B\" or \"R\" grade) and is retained by two 1.0mm circlips.\u003cstrong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePin Diameter:\u003c\/strong\u003e 14mm (pin sold separately)\u003cstrong\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncludes:\u003c\/strong\u003e Piston, Ring, and 2 Circlips\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePiston selection weight matters for class compliance and engine balance. Consult your engine builder or the IAME technical regulations for your series to determine the correct weight. When ordering, match your piston ring to the piston diameter — the ring size corresponds to the piston bore size, not the piston weight. Available at CMC Karting.\u003c\/p\u003e","brand":"IAME USA","offers":[{"title":"48.20g","offer_id":47785477243101,"sku":"EBP-85050-CV","price":132.75,"currency_code":"USD","in_stock":true},{"title":"48.22g","offer_id":47785491890397,"sku":"EBP-85055-CV","price":132.75,"currency_code":"USD","in_stock":true},{"title":"48.24g","offer_id":47785495331037,"sku":"EBP-85057-CV","price":132.75,"currency_code":"USD","in_stock":true},{"title":"48.26g","offer_id":47785492250845,"sku":"EBP-85060-CV","price":132.75,"currency_code":"USD","in_stock":true},{"title":"48.28g","offer_id":47785492283613,"sku":"EBP-85063-CV","price":132.75,"currency_code":"USD","in_stock":true},{"title":"48.30g","offer_id":47785492316381,"sku":"EBP-85065-CV","price":132.75,"currency_code":"USD","in_stock":true},{"title":"48.32g","offer_id":47785492349149,"sku":"EBP-85070-CV","price":132.75,"currency_code":"USD","in_stock":true},{"title":"48.34g","offer_id":47785492381917,"sku":"EBP-85072-CV","price":132.75,"currency_code":"USD","in_stock":true},{"title":"48.36g","offer_id":47785492414685,"sku":"EBP-85075-CV","price":132.75,"currency_code":"USD","in_stock":true},{"title":"48.40g","offer_id":47785492447453,"sku":"EBP-85080-CV","price":132.75,"currency_code":"USD","in_stock":true},{"title":"48.42g","offer_id":47785492480221,"sku":"EBP-85085-CV","price":132.75,"currency_code":"USD","in_stock":true},{"title":"48.44g","offer_id":47785492512989,"sku":"EBP-85087-CV","price":132.75,"currency_code":"USD","in_stock":true},{"title":"48.46g","offer_id":47785492545757,"sku":"EBP-85090-CV","price":132.75,"currency_code":"USD","in_stock":true},{"title":"48.48g","offer_id":47785492578525,"sku":"EBP-85093-CV","price":132.75,"currency_code":"USD","in_stock":true},{"title":"48.50g","offer_id":47785492611293,"sku":"EBP-85095-CV","price":132.75,"currency_code":"USD","in_stock":true},{"title":"48.52g","offer_id":47785492644061,"sku":"EBP-85100-CV","price":132.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0731\/6770\/0189\/files\/CMCKA100PistonandRings.png?v=1776125524"},{"product_id":"iame-ka100-piston-ring","title":"(53) IAME KA100 Piston Ring – Select Size","description":"\u003cp\u003eThe \u003cstrong\u003eIAME KA100 piston ring\u003c\/strong\u003e is the factory OEM compression ring for the KA100 100cc reed-jet kart engine. Available in seven bore sizes from 48.20mm to 48.50mm, the piston ring must be matched to your specific piston diameter to ensure proper ring-to-bore clearance and sealing. A correctly fitted ring provides consistent compression, efficient combustion sealing, and proper oil control in the two-stroke cylinder.\u003c\/p\u003e\n\u003cp\u003eThis piston ring fits all current IAME KA100 pistons. The ring size corresponds to the cylinder bore diameter, which determines the piston size used. When ordering, select the ring size that matches your piston — for example, if you are running a 48.26g piston in a 48.26mm bore, order the 48.26 ring. Always measure your actual bore diameter with a bore gauge before selecting, as cylinders may vary slightly from nominal.\u003cstrong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAvailable Sizes:\u003c\/strong\u003e 48.20, 48.26, 48.30, 48.36, 48.40, 48.46, 48.50mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1 ring per order\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePiston rings are wear items that should be replaced during every top-end rebuild or when compression testing indicates ring seal degradation. Check ring end gap with a feeler gauge before installation and compare to the IAME service manual specification. Available at CMC Karting.\u003c\/p\u003e","brand":"IAME USA","offers":[{"title":"48.20","offer_id":47785477275869,"sku":"B-65175","price":48.74,"currency_code":"USD","in_stock":true},{"title":"48.26","offer_id":47785488384221,"sku":"B-65178","price":48.74,"currency_code":"USD","in_stock":true},{"title":"48.30","offer_id":47785488416989,"sku":"B-65180","price":48.74,"currency_code":"USD","in_stock":true},{"title":"48.36","offer_id":47785488449757,"sku":"B-65183","price":48.74,"currency_code":"USD","in_stock":true},{"title":"48.40","offer_id":47785488482525,"sku":"B-65185","price":48.74,"currency_code":"USD","in_stock":true},{"title":"48.46","offer_id":47785488515293,"sku":"B-65188","price":48.74,"currency_code":"USD","in_stock":true},{"title":"48.50","offer_id":47785488548061,"sku":"B-65190","price":48.74,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0731\/6770\/0189\/files\/CMCKA100PistonRing.png?v=1776124797"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0731\/6770\/0189\/collections\/CMC_KA100_Piston_Diagram.png?v=1775082544","url":"https:\/\/cmckarting.com\/collections\/iame-ka100-piston-ring-parts.oembed","provider":"CMC Karting","version":"1.0","type":"link"}