{"title":"Pit Bike Sprockets","description":null,"products":[{"product_id":"zl60-60cc-10-tooth-front-sprocket-zs1p44fmc","title":"ZL60 60cc 10 Tooth Front Sprocket (ZS1P44FMC)","description":"This is a new item. 10 tooth for 420 chain. For use on 60cc pit bike engines with engine code ZS1P44FMC Used in Stomp Mini 65cc KAYO KMB 60cc Apollo RXF 60cc K1 60cc VMX 60cc Assassin DK60 SYX moto 60cc","brand":"Zongshen","offers":[{"title":"Default Title","offer_id":56136710652244,"sku":"SP-ZL60-60","price":6.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/4463\/0100\/files\/fb9f2aa1de6c34cecc3c0d7472e6332c.jpg?v=1781643148"},{"product_id":"41-tooth-420-sdg-pit-bike-rear-sprocket","title":"41 Tooth 420 SDG Pit Bike Rear Sprocket","description":"This is a new item.  41 tooth for use with 420 chain  Centre hole is 76mm in diameter 92mm between bolt holes (diagonally across centre hole)  65mm between bolt holes (from one to the next)","brand":"Red Circles","offers":[{"title":"Default Title","offer_id":56136999567700,"sku":"PB135.1","price":6.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/4463\/0100\/files\/dbbe266e321f49499984189630d5c8e4.png?v=1781648060"},{"product_id":"39-tooth-420-sdg-pit-bike-rear-sprocket","title":"39 Tooth 420 SDG Pit Bike Rear Sprocket","description":"This is a new item.  39 tooth for use with 420 chain  Centre hole is 76mm in diameter 92mm between bolt holes (diagonally across centre hole)  65mm between bolt holes (from one to the next)","brand":"Red Circles","offers":[{"title":"Default Title","offer_id":56136999698772,"sku":"PB134.1","price":6.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/4463\/0100\/files\/d1a1973faa22c91e640210c8d2d677ec.png?v=1781648068"},{"product_id":"15-tooth-420-pit-bike-front-sprocket-17mm","title":"15 Tooth 420 Pit Bike Front Sprocket (17mm)","description":"This is a new item. 15 tooth for use with 420 chain. 17mm centre spline. SIZE NOTES:  Centre Spline can be 17mm or 20mm depending on engine. MOST are 17mm but please check before ordering. Sprocket tooth size guide: 420 chain - Width between inner plates is 6.35mm, roller diameter 7.77mm 428 chain - Width between inner plates is 7.94mm, roller diameter 8.51mm","brand":"Red Circles","offers":[{"title":"Default Title","offer_id":56137001632084,"sku":"PB774.1","price":5.79,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/4463\/0100\/files\/025c7daaa9ae1a56d32cdd0f6175cb7b.png?v=1781648100"},{"product_id":"pit-bike-rear-sprocket-bolt-locking-tabs","title":"Pit Bike Rear Sprocket Bolt Locking Tabs","description":"This is a new item.  Fits SDG rear hubs. Used to lock the sprocket bolts in place. Sale is for 2x clamps.","brand":"Red Circles","offers":[{"title":"Default Title","offer_id":56137001697620,"sku":"PB1251.1","price":3.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/4463\/0100\/files\/65c1b37f07ffcf1c639979eec633f004.png?v=1781648109"},{"product_id":"m8-flange-pit-bike-sprocket-bolts","title":"M8 Flange Pit Bike Sprocket Bolts.","description":"This is a new set. M8 thread. 22mm long.4x Bolts included in the sale.Fits most pit bike wheel \u0026amp; sprocket combinations.","brand":"Red Circles","offers":[{"title":"Default Title","offer_id":56137002156372,"sku":"PB308.1","price":3.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/4463\/0100\/files\/e7fc85ded1bd22daa48574f8a3fc6c7b.png?v=1781648116"},{"product_id":"17mm-pit-bike-front-sprocket-retainer-clip-with-bolts","title":"17mm Pit Bike Front Sprocket Retainer Clip With Bolts","description":"This is a new item.  For use with 17mm splines (at widest point).  Fits most Chinese import Pit \/ Dirt bikes but some have the wider 20mm shaft (please check before purchasing).","brand":"Red Circles","offers":[{"title":"Default Title","offer_id":56137002549588,"sku":"PB181.1","price":2.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/4463\/0100\/files\/fdfc04c82862ed597f6a3d1a4b27e475.png?v=1781648124"},{"product_id":"41-tooth-428-sdg-pit-bike-rear-sprocket","title":"41 Tooth 428 SDG Pit Bike Rear Sprocket","description":"This is a new item.  41 tooth for use with 428 chain  Centre hole is 76mm in diameter 92mm between bolt holes (diagonally across centre hole)  65mm between bolt holes (from one to the next)","brand":"Red Circles","offers":[{"title":"Default Title","offer_id":56137003008340,"sku":"PB138.1","price":6.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/4463\/0100\/files\/86c3e0c2bbc5c9974cc5c9c9f8dd5341.png?v=1781648141"},{"product_id":"15-tooth-428-pit-bike-front-sprocket-17mm","title":"15 Tooth 428 Pit Bike Front Sprocket (17mm)","description":"This is a new item. 15 tooth for use with 428 chain. 17mm centre spline. SIZE NOTES:  Centre Spline can be 17mm or 20mm depending on engine. MOST are 17mm but please check before ordering. Sprocket tooth size guide: 420 chain - Width between inner plates is 6.35mm, roller diameter 7.77mm 428 chain - Width between inner plates is 7.94mm, roller diameter 8.51mm","brand":"Red Circles","offers":[{"title":"Default Title","offer_id":56137003434324,"sku":"PB783.1","price":5.79,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/4463\/0100\/files\/02eb3d9669d3413fb04b275ad1299d98.png?v=1781648149"},{"product_id":"18-tooth-420-pit-bike-front-sprocket-17mm","title":"18 Tooth 420 Pit Bike Front Sprocket (17mm)","description":"This is a new item. 18 tooth for use with 420 chain. 17mm centre spline. SIZE NOTES:  Centre Spline can be 17mm or 20mm depending on engine. MOST are 17mm but please check before ordering. Sprocket tooth size guide: 420 chain - Width between inner plates is 6.35mm, roller diameter 7.77mm 428 chain - Width between inner plates is 7.94mm, roller diameter 8.51mm","brand":"Red Circles","offers":[{"title":"Default Title","offer_id":56137003532628,"sku":"PB777.1","price":5.79,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/4463\/0100\/files\/d1f2342e3bfa5277b620af8d1b744705.png?v=1781648157"},{"product_id":"37-tooth-420-sdg-pit-bike-rear-sprocket","title":"37 Tooth 420 SDG Pit Bike Rear Sprocket","description":"This is a new item.  37 tooth for use with 420 chain  Centre hole is 76mm in diameter 92mm between bolt holes (diagonally across centre hole)  65mm between bolt holes (from one to the next)","brand":"Red Circles","offers":[{"title":"Default Title","offer_id":56137003696468,"sku":"PB133.1","price":6.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/4463\/0100\/files\/8280791f5b97c316e16bd8d2b320ab59.png?v=1781648165"},{"product_id":"20mm-pit-bike-front-sprocket-retainer-clip-with-bolts","title":"20mm Pit Bike Front Sprocket Retainer Clip With Bolts","description":"This is a new item.  For use with 20mm splines (at widest point).  Fits most the bigger 20mm output shafts on some lifan engines.","brand":"Red Circles","offers":[{"title":"Default Title","offer_id":56137004056916,"sku":"PB220.1","price":2.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/4463\/0100\/files\/898b6a8028cde52503b6c0b5e5a1910a.png?v=1781648172"},{"product_id":"16-tooth-428-pit-bike-front-sprocket-17mm","title":"16 Tooth 428 Pit Bike Front Sprocket (17mm)","description":"This is a new item. 16 tooth for use with 428 chain. 17mm centre spline. SIZE NOTES:  Centre Spline can be 17mm or 20mm depending on engine. MOST are 17mm but please check before ordering. Sprocket tooth size guide: 420 chain - Width between inner plates is 6.35mm, roller diameter 7.77mm 428 chain - Width between inner plates is 7.94mm, roller diameter 8.51mm","brand":"Red Circles","offers":[{"title":"Default Title","offer_id":56137004810580,"sku":"PB784.1","price":5.79,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/4463\/0100\/files\/64b2fcb48a8d8a31a6d2afd6ef132f57.png?v=1781648180"},{"product_id":"39-tooth-428-sdg-pit-bike-rear-sprocket","title":"39 Tooth 428 SDG Pit Bike Rear Sprocket","description":"This is a new item.  39 tooth for use with 428 chain  Centre hole is 76mm in diameter 92mm between bolt holes (diagonally across centre hole)  65mm between bolt holes (from one to the next)","brand":"Red Circles","offers":[{"title":"Default Title","offer_id":56137004908884,"sku":"PB137.1","price":6.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/4463\/0100\/files\/30fc0e50191b71d550ddae0e1cc994e3.png?v=1781648189"},{"product_id":"17-tooth-420-pit-bike-front-sprocket-17mm","title":"17 Tooth 420 Pit Bike Front Sprocket (17mm)","description":"This is a new item. 17 tooth for use with 420 chain. 17mm centre spline. SIZE NOTES:  Centre Spline can be 17mm or 20mm depending on engine. MOST are 17mm but please check before ordering. Sprocket tooth size guide: 420 chain - Width between inner plates is 6.35mm, roller diameter 7.77mm 428 chain - Width between inner plates is 7.94mm, roller diameter 8.51mm","brand":"Red Circles","offers":[{"title":"Default Title","offer_id":56137005171028,"sku":"PB776.1","price":5.79,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/4463\/0100\/files\/7a90ed875c9a354a31c71ed397bd2e73.png?v=1781648197"},{"product_id":"16-tooth-420-pit-bike-front-sprocket-17mm","title":"16 Tooth 420 Pit Bike Front Sprocket (17mm)","description":"This is a new item. 16 tooth for use with 420 chain. 17mm centre spline. SIZE NOTES:  Centre Spline can be 17mm or 20mm depending on engine. MOST are 17mm but please check before ordering. Sprocket tooth size guide: 420 chain - Width between inner plates is 6.35mm, roller diameter 7.77mm 428 chain - Width between inner plates is 7.94mm, roller diameter 8.51mm","brand":"Red Circles","offers":[{"title":"Default Title","offer_id":56137005269332,"sku":"PB775.1","price":5.79,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/4463\/0100\/files\/974af4315faddb2171e72685c704578c.png?v=1781648205"},{"product_id":"classic-pit-bike-37-tooth-428-rear-sprocket","title":"Classic Pit Bike 37 Tooth 428 Rear Sprocket","description":"This is a new item.  37 tooth for use with 428 chain. Centre hole is 52mm in diameter.  67mm between bolt holes (diagonally across centre hole)  47mm between bolt holes (from one to the next) 7mm thick.  NOTE: Please check your chain size, it will either be 420 or 428.  This number may be stamped on your chain or sprockets already.","brand":"Red Circles","offers":[{"title":"Default Title","offer_id":56137006022996,"sku":"PB127.1","price":6.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/4463\/0100\/files\/50e95f3389b739377662bdec2232af6f.png?v=1781648213"},{"product_id":"17-tooth-428-pit-bike-front-sprocket-17mm","title":"17 Tooth 428 Pit Bike Front Sprocket (17mm)","description":"This is a new item. 17 tooth for use with 428 chain. 17mm centre spline. SIZE NOTES:  Centre Spline can be 17mm or 20mm depending on engine. MOST are 17mm but please check before ordering. Sprocket tooth size guide: 420 chain - Width between inner plates is 6.35mm, roller diameter 7.77mm 428 chain - Width between inner plates is 7.94mm, roller diameter 8.51mm","brand":"Red Circles","offers":[{"title":"Default Title","offer_id":56137006711124,"sku":"PB785.1","price":4.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/4463\/0100\/files\/5009396c2f2d1a1241a425b63a6ee350.png?v=1781648230"},{"product_id":"classic-pit-bike-41-tooth-420-rear-sprocket","title":"Classic Pit Bike 41 Tooth 420 Rear Sprocket","description":"This is a new item. 41 tooth for use with .420 chain Centre hole is 52mm in diameter. 67mm between bolt holes (diagonally across centre hole) 47mm between bolt holes (from one to the next) 6mm thick. Fits bikes with 420 set ups. NOTE: Please check your chain size, it will either be 420 or 428. This number may be stamped on your chain or sprockets already.","brand":"Red Circles","offers":[{"title":"Default Title","offer_id":56137006776660,"sku":"PB53.1","price":7.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/4463\/0100\/files\/97c088ccc855db9a5a149c95e9c22de2.png?v=1781648239"},{"product_id":"14-tooth-420-pit-bike-front-sprocket-17mm","title":"14 Tooth 420 Pit Bike Front Sprocket (17mm)","description":"This is a new item. 14 tooth for use with 420 chain. 17mm centre spline. SIZE NOTES:  Centre Spline can be 17mm or 20mm depending on engine. MOST are 17mm but please check before ordering. Sprocket tooth size guide: 420 chain - Width between inner plates is 6.35mm, roller diameter 7.77mm 428 chain - Width between inner plates is 7.94mm, roller diameter 8.51mm","brand":"Red Circles","offers":[{"title":"Default Title","offer_id":56137007104340,"sku":"PB773.1","price":5.79,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/4463\/0100\/files\/a13a1fdbf3f10541e5f3949d746886e4.png?v=1781648247"},{"product_id":"10-tooth-428-pit-bike-front-sprocket-17mm","title":"10 Tooth 428 Pit Bike Front Sprocket (17mm)","description":"This is a new item. 10 tooth for use with 428 chain. 17mm centre spline. SIZE NOTES:  Centre Spline can be 17mm or 20mm depending on engine. MOST are 17mm but please check before ordering. Sprocket tooth size guide: 420 chain - Width between inner plates is 6.35mm, roller diameter 7.77mm 428 chain - Width between inner plates is 7.94mm, roller diameter 8.51mm","brand":"Red Circles","offers":[{"title":"Default Title","offer_id":56137008513364,"sku":"PB778.1","price":5.79,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/4463\/0100\/files\/5ed79613aff173840b99b28e3f03c9bc.png?v=1781648264"},{"product_id":"15-tooth-428-pit-bike-front-sprocket-20mm","title":"15 Tooth 428 Pit Bike Front Sprocket (20mm)","description":"This is a new item. 15 tooth for use with 428 chain. 20mm centre spline. SIZE NOTES:  Centre Spline can be 17mm or 20mm depending on engine. MOST are 17mm but please check before ordering. Sprocket tooth size guide: 420 chain - Width between inner plates is 6.35mm, roller diameter 7.77mm 428 chain - Width between inner plates is 7.94mm, roller diameter 8.51mm","brand":"Red Circles","offers":[{"title":"Default Title","offer_id":56137009004884,"sku":"PB801.1","price":5.79,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/4463\/0100\/files\/40225e5634fd5e70e1a63e8cdf7f3cd6.png?v=1781648272"},{"product_id":"deep-state-38-tooth-420-rear-sprocket-red","title":"DEEP STATE 38 tooth 420 rear sprocket - Red","description":"This is a new item. 38 tooth. CNC machined from 7075 aluminium. Lightweight. For use with 420 chain. Anodised red finish. Official Deep State product.","brand":"Deep State","offers":[{"title":"Default Title","offer_id":56137009201492,"sku":"DSS38420RED.1","price":25.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/4463\/0100\/files\/1461547893ada591aeb516751016718b.png?v=1781648283"},{"product_id":"11-tooth-420-pit-bike-front-sprocket-17mm","title":"11 Tooth 420 Pit Bike Front Sprocket (17mm)","description":"This is a new item. 11 tooth for use with 420 chain. 17mm centre spline. SIZE NOTES:  Centre Spline can be 17mm or 20mm depending on engine. MOST are 17mm but please check before ordering. Sprocket tooth size guide: 420 chain - Width between inner plates is 6.35mm, roller diameter 7.77mm 428 chain - Width between inner plates is 7.94mm, roller diameter 8.51mm","brand":"Red Circles","offers":[{"title":"Default Title","offer_id":56137009430868,"sku":"PB770.1","price":5.79,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/4463\/0100\/files\/5f501139ee71949b687765d4383ed525.png?v=1781648291"},{"product_id":"12-tooth-420-pit-bike-front-sprocket-17mm","title":"12 Tooth 420 Pit Bike Front Sprocket (17mm)","description":"This is a new item. 12 tooth for use with 420 chain. 17mm centre spline. SIZE NOTES:  Centre Spline can be 17mm or 20mm depending on engine. MOST are 17mm but please check before ordering. Sprocket tooth size guide: 420 chain - Width between inner plates is 6.35mm, roller diameter 7.77mm 428 chain - Width between inner plates is 7.94mm, roller diameter 8.51mm","brand":"Red Circles","offers":[{"title":"Default Title","offer_id":56137009529172,"sku":"PB771.1","price":5.79,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/4463\/0100\/files\/b18011b9744fc991cc8d031ec8bbe918.png?v=1781648299"},{"product_id":"13-tooth-428-pit-bike-front-sprocket-17mm","title":"13 Tooth 428 Pit Bike Front Sprocket (17mm)","description":"This is a new item. 13 tooth for use with 428 chain. 17mm centre spline. SIZE NOTES:  Centre Spline can be 17mm or 20mm depending on engine. MOST are 17mm but please check before ordering. Sprocket tooth size guide: 420 chain - Width between inner plates is 6.35mm, roller diameter 7.77mm 428 chain - Width between inner plates is 7.94mm, roller diameter 8.51mm","brand":"Red Circles","offers":[{"title":"Default Title","offer_id":56137009594708,"sku":"PB781.1","price":5.79,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/4463\/0100\/files\/a4d17bfc39155c6aa2190a5a66fc4a9a.png?v=1781648307"},{"product_id":"deep-state-42-tooth-420-rear-sprocket-red","title":"DEEP STATE 42 tooth 420 rear sprocket - Red","description":"This is a new item. 42 tooth. CNC machined from 7075 aluminium. Lightweight. For use with 420 chain. Anodised red finish. Official Deep State product.","brand":"Deep State","offers":[{"title":"Default Title","offer_id":56137010512212,"sku":"DSS42420RED.1","price":27.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/4463\/0100\/files\/510bb7562dcd919471b91b33c1d6f8cf.png?v=1781648317"},{"product_id":"14-tooth-428-pit-bike-front-sprocket-17mm","title":"14 Tooth 428 Pit Bike Front Sprocket (17mm)","description":"This is a new item. 14 tooth for use with 428 chain. 17mm centre spline. SIZE NOTES:  Centre Spline can be 17mm or 20mm depending on engine. MOST are 17mm but please check before ordering. Sprocket tooth size guide: 420 chain - Width between inner plates is 6.35mm, roller diameter 7.77mm 428 chain - Width between inner plates is 7.94mm, roller diameter 8.51mm","brand":"Red Circles","offers":[{"title":"Default Title","offer_id":56137010774356,"sku":"PB782.1","price":5.79,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/4463\/0100\/files\/297ad4a9d0a7cccaab2bad8103571796.png?v=1781648334"},{"product_id":"classic-pit-bike-41-tooth-428-rear-sprocket","title":"Classic Pit Bike 41 Tooth 428 Rear Sprocket","description":"This is a new item.  41 tooth for use with 428 chain. Centre hole is 52mm in diameter.  67mm between bolt holes (diagonally across centre hole)  47mm between bolt holes (from one to the next) 7mm thick.  NOTE: Please check your chain size, it will either be 420 or 428.  This number may be stamped on your chain or sprockets already.","brand":"Red Circles","offers":[{"title":"Default Title","offer_id":56137011724628,"sku":"PB128.1","price":6.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/4463\/0100\/files\/73133759215015f6400e3482a279eec5.png?v=1781648372"},{"product_id":"15-tooth-420-pit-bike-front-sprocket-20mm","title":"15 Tooth 420 Pit Bike Front Sprocket (20mm)","description":"This is a new item. 15 tooth for use with 420 chain. 20mm centre spline. SIZE NOTES:  Centre Spline can be 17mm or 20mm depending on engine. MOST are 17mm but please check before ordering. Sprocket tooth size guide: 420 chain - Width between inner plates is 6.35mm, roller diameter 7.77mm 428 chain - Width between inner plates is 7.94mm, roller diameter 8.51mm","brand":"Red Circles","offers":[{"title":"Default Title","offer_id":56137011888468,"sku":"PB792.1","price":5.79,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/4463\/0100\/files\/9ffe09cf43ae73475dac4619a0808995.png?v=1781648379"},{"product_id":"14-tooth-420-pit-bike-front-sprocket-20mm","title":"14 Tooth 420 Pit Bike Front Sprocket (20mm)","description":"This is a new item. 14 tooth for use with 420 chain. 20mm centre spline. SIZE NOTES:  Centre Spline can be 17mm or 20mm depending on engine. MOST are 17mm but please check before ordering. Sprocket tooth size guide: 420 chain - Width between inner plates is 6.35mm, roller diameter 7.77mm 428 chain - Width between inner plates is 7.94mm, roller diameter 8.51mm","brand":"Red Circles","offers":[{"title":"Default Title","offer_id":56137012707668,"sku":"PB791.1","price":5.79,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/4463\/0100\/files\/4a8a957e2befce0735a3e88a8d983655.png?v=1781648387"},{"product_id":"13-tooth-420-pit-bike-front-sprocket-17mm","title":"13 Tooth 420 Pit Bike Front Sprocket (17mm)","description":"This is a new item. 13 tooth for use with 420 chain. 17mm centre spline. SIZE NOTES:  Centre Spline can be 17mm or 20mm depending on engine. MOST are 17mm but please check before ordering. Sprocket tooth size guide: 420 chain - Width between inner plates is 6.35mm, roller diameter 7.77mm 428 chain - Width between inner plates is 7.94mm, roller diameter 8.51mm","brand":"Red Circles","offers":[{"title":"Default Title","offer_id":56137012969812,"sku":"PB772.1","price":5.79,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/4463\/0100\/files\/5828be111ce79698ec9e7ac868440172.png?v=1781648394"},{"product_id":"16-tooth-420-pit-bike-front-sprocket-20mm","title":"16 Tooth 420 Pit Bike Front Sprocket (20mm)","description":"This is a new item. 16 tooth for use with 420 chain. 20mm centre spline. SIZE NOTES:  Centre Spline can be 17mm or 20mm depending on engine. MOST are 17mm but please check before ordering. Sprocket tooth size guide: 420 chain - Width between inner plates is 6.35mm, roller diameter 7.77mm 428 chain - Width between inner plates is 7.94mm, roller diameter 8.51mm","brand":"Red Circles","offers":[{"title":"Default Title","offer_id":56137013068116,"sku":"PB793.1","price":5.79,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/4463\/0100\/files\/f695d01e6596c8694422ff0d1c9a8833.png?v=1781648403"},{"product_id":"17-tooth-428-pit-bike-front-sprocket-20mm","title":"17 Tooth 428 Pit Bike Front Sprocket (20mm)","description":"This is a new item. 17 tooth for use with 428 chain. 20mm centre spline. SIZE NOTES:  Centre Spline can be 17mm or 20mm depending on engine. MOST are 17mm but please check before ordering. 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Official Deep State product.","brand":"Deep State","offers":[{"title":"Default Title","offer_id":56137015492948,"sku":"DSS45420RED.1","price":28.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/4463\/0100\/files\/c32eb853a23e9aa666b359ec53c559c5.png?v=1781648478"},{"product_id":"deep-state-32-tooth-420-rear-sprocket-gold","title":"DEEP STATE 32 tooth 420 rear sprocket - Gold","description":"This is a new item. 32 tooth. CNC machined from 7075 aluminium. Lightweight. For use with 420 chain. Anodised gold finish. Official Deep State product.","brand":"Deep State","offers":[{"title":"Default Title","offer_id":56137015984468,"sku":"DSS32420GOLD.1","price":23.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/4463\/0100\/files\/bf7ffdab6d51f0c5bfbdc47d878db104.png?v=1781648499"},{"product_id":"deep-state-31-tooth-420-rear-sprocket-red","title":"DEEP STATE 31 tooth 420 rear sprocket - Red","description":"This is a new item. 31 tooth. CNC machined from 7075 aluminium. Lightweight. For use with 420 chain. Anodised red finish. 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