{"product_id":"bbb-bcr-72e-e-bike-mount-spider-for-bosch-gen4-crankset-4-arm-104mm-bcd-cl52","title":"BBB BCR-72E E-bike Mount Spider for Bosch Gen4 Crankset 4-Arm 104mm BCD CL52","description":"\u003cp\u003eThe BBB BCR-72E E-bike Mount Spider is designed specifically for Bosch Gen 4 cranksets, ensuring seamless compatibility and reliable performance. Crafted from durable steel, this spider supports 4-arm chainrings with a BCD of 104mm, providing strength and longevity for your e-bike drivetrain. The 52mm chainline optimizes chain alignment for smooth and efficient power transfer.\u003c\/p\u003e\n\n\u003cp\u003eIdeal for single crankset configurations, this component is a perfect choice for riders looking to maintain or upgrade their Bosch Gen 4 e-bike system. Its robust construction and precise specifications make it a dependable replacement part or upgrade accessory.\u003c\/p\u003e\n\n\u003ch3\u003eWhat It’s Good For\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eEnsuring compatibility with Bosch Gen 4 e-bike systems\u003c\/li\u003e\n  \u003cli\u003eSupporting 4-arm chainrings with 104mm BCD\u003c\/li\u003e\n  \u003cli\u003eProviding a durable steel construction for long-lasting use\u003c\/li\u003e\n  \u003cli\u003eOptimizing chainline to 52mm for efficient drivetrain performance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat It’s NOT Good For\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eUse with cranksets other than Bosch Gen 4\u003c\/li\u003e\n  \u003cli\u003eChainrings with BCD sizes different from 104mm\u003c\/li\u003e\n  \u003cli\u003eMulti-chainring setups requiring different spider designs\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eIs this spider compatible with other Bosch crankset generations?\u003c\/strong\u003e\u003cbr\u003eNo, it is specifically designed for Bosch Gen 4 cranksets and may not fit earlier versions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use this spider with 3-arm or 5-arm chainrings?\u003c\/strong\u003e\u003cbr\u003eNo, this spider supports only 4-arm chainrings with a 104mm BCD.\u003c\/p\u003e","brand":"BBB","offers":[{"title":"Black","offer_id":45965228736687,"sku":"2909697201","price":22.72,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0654\/2003\/4223\/files\/BCR-72E-2909697201_01.jpg?v=1768532116","url":"https:\/\/www.swinnertoncycles.co.uk\/products\/bbb-bcr-72e-e-bike-mount-spider-for-bosch-gen4-crankset-4-arm-104mm-bcd-cl52","provider":"Swinnerton Cycles","version":"1.0","type":"link"}