{"product_id":"crazy-crawler-laserfoam-ft-pro-spur-master-1-9-foam-crawler-tire-insert-4-czy-cyc101","title":"Crazy Crawler LaserFoam \"FT Pro Spur Master\" 1.9\" Foam Crawler Tire Insert (4)","description":"\u003cp\u003eThe Crazy Crawler LaserFoam \"FT Pro Spur Master\" is a red lateral-stability ring for the FT Pro tire insert system, designed for 4.75\" crawler tires. This package includes four Spur Master insert rings.\u003c\/p\u003e\u003ch3\u003eProduct Details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMaterial: Closed Cell, WP magic (hard)\u003c\/li\u003e\n\u003cli\u003ePoints: 28\u003c\/li\u003e\n\u003cli\u003eOutside diameter: 114 mm\u003c\/li\u003e\n\u003cli\u003eInner diameter: 50 mm\u003c\/li\u003e\n\u003cli\u003eWidth: 10mm\u003c\/li\u003e\n\u003cli\u003eWeight: 4g ea\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFT Pro System\u003c\/h3\u003e\u003cp\u003eEach tire uses one Spur Master ring supported on both sides by FT Pro \"Basic\" or \"Heavy Duty\" rings, which are purchased separately. The Spur Master has deeper, steeper-angle prongs and is cut slightly smaller than the Basic and Heavy Duty support rings to help prevent contact-patch distortion and tire over-inflation.\u003c\/p\u003e\u003cp\u003eChoose Basic support rings for harder compound tires, lighter trucks under 7 pounds, or maximum traction. Choose Heavy Duty support rings for softer compound tires or heavier rigs requiring more support. Basic and Heavy Duty support rings are available in 15mm and 20mm widths.\u003c\/p\u003e\u003ch3\u003eSupport Ring Combinations\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e42-45mm wide tire:\u003c\/strong\u003e Two 15mm support rings with one Spur Master create a 40mm wide insert.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e47-50mm wide tire:\u003c\/strong\u003e One 15mm and one 20mm support ring with one Spur Master create a 45mm wide insert.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e52mm + wide tire:\u003c\/strong\u003e Two 20mm support rings with one Spur Master create a 50mm wide insert.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThe insert should ideally be slightly narrower than the tire width. Mix and match support rings as needed.\u003c\/p\u003e\u003ch3\u003eIncludes\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e(4) FT Pro Spur Master Insert Rings\u003c\/li\u003e\u003c\/ul\u003e","brand":"Crazy Crawler","offers":[{"title":"Default Title","offer_id":46317542146282,"sku":"CZY-CYC101","price":35.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0703\/9723\/1338\/files\/CZY-CYC101_01.jpg?v=1790125385","url":"https:\/\/swflrcr.com\/products\/crazy-crawler-laserfoam-ft-pro-spur-master-1-9-foam-crawler-tire-insert-4-czy-cyc101","provider":"SWFLRC Raceway","version":"1.0","type":"link"}