{"product_id":"ls1-shaft-rocker-kit","title":"LS1 Shaft Rocker Kit","description":"Performance-minded engine builders often encounter valve train deflection issues when using stock rocker arm mounting in Chevrolet Gen III-IV cylinder heads. The Brian Tooley Racing (BTR) LS1 Shaft Rocker System addresses this by significantly reducing deflection, thereby improving both performance and durability.\n\nThis kit incorporates technology typically found in high-end shaft rocker systems. The shafts themselves are precision-machined from genuine 52100 bearing steel, ensuring longevity and smooth operation. A key design improvement is the use of five fasteners per pair of rockers to mount them to the stand, a significant upgrade from the traditional single-bolt configuration. Steel stands were chosen over aluminum after extensive testing due to their superior strength and performance.\n\nKey components included in the kit are two LS1 Shaft Rocker Kit Stands, eight LS1 Shaft Rocker Kit Shafts, 34 bolts for the rocker stands, 24 shaft rocker thrust shims (.047\" thick), and one rocker arm trunnion bearing kit.\n\nIt is crucial to check fitment with your specific aftermarket cylinder head before assembly, as this kit is intended for cathedral port heads. The product is EMS Code 4, meaning it does not require an EO in California and is legal for sale and use in all 50 states.","brand":"BTR","offers":[{"title":"Default Title","offer_id":52687300428088,"sku":"BTR LS1 SHAFT ROCKER KIT","price":309.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/660190468.webp?v=1784882364","url":"https:\/\/store.motormia.co\/products\/ls1-shaft-rocker-kit","provider":"MOTORMIA","version":"1.0","type":"link"}