{"product_id":"yoshimura-camshaft-st-1-gsx1100s-gsx750s-katana","title":"Yoshimura Camshaft ST-1 – GSX1100S \/ GSX750S Katana","description":"\u003cp data-start=\"148\" data-end=\"170\"\u003eRefined from within.\u003c\/p\u003e\n\u003cp data-start=\"172\" data-end=\"338\"\u003eThe Yoshimura ST-1 camshaft is built to enhance response and overall engine performance, bringing a sharper, more controlled feel to the air-cooled Katana platform.\u003c\/p\u003e\n\u003cp data-start=\"340\" data-end=\"474\"\u003eLightweight construction and precision finishing reduce internal resistance—unlocking smoother power and improved throttle response.\u003c\/p\u003e\n\u003chr data-start=\"476\" data-end=\"479\"\u003e\n\u003cp data-start=\"481\" data-end=\"571\"\u003e\u003cstrong data-start=\"481\" data-end=\"492\"\u003eFitment\u003c\/strong\u003e\u003cbr data-start=\"492\" data-end=\"495\"\u003e• GSX1100S Katana\u003cbr data-start=\"512\" data-end=\"515\"\u003e• GSX750S Katana\u003cbr data-start=\"531\" data-end=\"534\"\u003e(Engine codes: GS110X \/ 75X \/ U713)\u003c\/p\u003e\n\u003chr data-start=\"573\" data-end=\"576\"\u003e\n\u003cp data-start=\"578\" data-end=\"731\"\u003e\u003cstrong data-start=\"578\" data-end=\"596\"\u003eSpecifications\u003c\/strong\u003e\u003cbr data-start=\"596\" data-end=\"599\"\u003e• Type: ST-1\u003cbr data-start=\"611\" data-end=\"614\"\u003e• Max Lift: IN 8.25mm \/ EX 8.25mm\u003cbr data-start=\"647\" data-end=\"650\"\u003e• Duration (1mm): IN 245° \/ EX 245°\u003cbr data-start=\"685\" data-end=\"688\"\u003e• Tappet Clearance: IN 0.15mm \/ EX 0.15mm\u003c\/p\u003e\n\u003chr data-start=\"733\" data-end=\"736\"\u003e\n\u003cp data-start=\"738\" data-end=\"903\"\u003e\u003cstrong data-start=\"738\" data-end=\"749\"\u003eDetails\u003c\/strong\u003e\u003cbr data-start=\"749\" data-end=\"752\"\u003e• Lightweight hollow cam construction (~20% weight reduction)\u003cbr data-start=\"813\" data-end=\"816\"\u003e• Barrel polished surface for reduced friction\u003cbr data-start=\"862\" data-end=\"865\"\u003e• Improved durability and efficiency\u003c\/p\u003e\n\u003chr data-start=\"905\" data-end=\"908\"\u003e\n\u003cp data-start=\"910\" data-end=\"1028\"\u003e\u003cstrong data-start=\"910\" data-end=\"925\"\u003ePerformance\u003c\/strong\u003e\u003cbr data-start=\"925\" data-end=\"928\"\u003e• Faster throttle response\u003cbr data-start=\"954\" data-end=\"957\"\u003e• Reduced rotational mass\u003cbr data-start=\"982\" data-end=\"985\"\u003e• Smoother, more efficient power delivery\u003c\/p\u003e\n\u003chr data-start=\"1030\" data-end=\"1033\"\u003e\n\u003cp data-start=\"1035\" data-end=\"1202\"\u003e\u003cstrong data-start=\"1035\" data-end=\"1048\"\u003eImportant\u003c\/strong\u003e\u003cbr data-start=\"1048\" data-end=\"1051\"\u003e• No tachometer gear (requires electric conversion)\u003cbr data-start=\"1102\" data-end=\"1105\"\u003e• Bolt-on installation possible\u003cbr data-start=\"1136\" data-end=\"1139\"\u003e• Valve timing adjustment recommended for optimal performance\u003c\/p\u003e\n\u003chr data-start=\"1204\" data-end=\"1207\"\u003e\n\u003cp data-start=\"1209\" data-end=\"1322\"\u003e\u003cstrong data-start=\"1209\" data-end=\"1218\"\u003eNotes\u003c\/strong\u003e\u003cbr data-start=\"1218\" data-end=\"1221\"\u003e• Minor variations may occur due to manufacturing\u003cbr data-start=\"1270\" data-end=\"1273\"\u003e• Instructions (if included) may be in Japanese\u003c\/p\u003e\n\u003chr data-start=\"1324\" data-end=\"1327\"\u003e\n\u003cp data-start=\"1329\" data-end=\"1357\" data-is-last-node=\"\" data-is-only-node=\"\"\u003ePrecision inside the engine.\u003c\/p\u003e","brand":"Yoshimura","offers":[{"title":"Default Title","offer_id":52801398571287,"sku":"211-191-5101","price":1440.7,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0700\/9343\/9255\/files\/Untitled-2-2026-04-16T190355.805.png?v=1776323047","url":"https:\/\/bushidomotorcycles.nz\/products\/yoshimura-camshaft-st-1-gsx1100s-gsx750s-katana","provider":"Bushido Motorcycles","version":"1.0","type":"link"}