{"product_id":"raceface-era-e-ebike-crank-arm-set-bg4-spindle-interface-carbon-black","title":"RaceFace Era-E Carbon eMTB Bosch Gen4 (BG4) Black Crank Arm Set","description":"\u003cp\u003eThe RaceFace Era-E is a \u003cstrong\u003ecarbon crank arm set for e-mountain bikes with a Bosch Gen4 drive unit\u003c\/strong\u003e, using the BG4 spindle interface. It's offered in 160, 165, and 170mm, all in black, and replaces heavier stock e-bike arms with UD carbon protected by stainless-steel wear plates.\u003c\/p\u003e\u003cp\u003eThese are arms for the motor's spindle, not a standalone crankset: the motor interface has to match. Chainrings are sold separately. RaceFace states the Era-E carries a lifetime warranty that includes crashes.\u003c\/p\u003e\u003ch4\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eE-MTB riders whose bike uses a Bosch Gen4 drive unit and who want to save weight at the arms\u003c\/li\u003e\n\u003cli\u003eRiders who scuff cranks on climbs and want steel wear plates over the carbon\u003c\/li\u003e\n\u003cli\u003eRiders looking at shorter 160 or 165mm arms for pedal clearance on a full-suspension e-bike\u003c\/li\u003e\n\u003cli\u003eConsider a different crank arm set if your motor is not a Bosch Gen4: the BG4 interface is the fitment gate here\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003e\u003cstrong\u003eWhat to Look For\u003c\/strong\u003e\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMotor interface:\u003c\/strong\u003e BG4 (Bosch Gen4). Confirm your drive unit generation before ordering.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCrank length:\u003c\/strong\u003e choose 160, 165, or 170mm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChainring:\u003c\/strong\u003e not included; you'll need a ring that fits your drive unit.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eUD carbon arms with stainless wear plates.\u003c\/strong\u003e The Era-E uses unidirectional carbon arms with stainless-steel plates where shoes rub. RaceFace says the plates add impact protection as well as keeping the arms from scuffing after many pedal-assisted climbs.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eBG4 motor interface.\u003c\/strong\u003e This set is built for the Bosch Gen4 drive unit. On an e-bike the motor interface has to match your drive unit exactly, so confirm the generation before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eLifetime warranty, per RaceFace.\u003c\/strong\u003e RaceFace backs the Era-E with a lifetime warranty it says includes crashes. That's worth knowing for e-MTB riders who put a lot of torque and rock strikes through their arms.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eThree lengths, one finish.\u003c\/strong\u003e Pick 160, 165, or 170mm, all in black. Shorter arms can help with pedal strikes on technical terrain. The set includes pedal boots, washers, and spindle spacers; chainrings are extra.\u003c\/p\u003e\u003ch4\u003e\u003cstrong\u003eRider Intent Summary\u003c\/strong\u003e\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBiggest strengths:\u003c\/strong\u003e Carbon arms built for Bosch Gen4 e-bikes, steel wear plates, and a lifetime warranty that RaceFace says covers crashes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTradeoffs:\u003c\/strong\u003e Only fits the BG4 interface listed; chainring sold separately.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhat makes it different:\u003c\/strong\u003e A carbon replacement for stock e-bike arms, aimed at a specific motor interface.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003e\u003cstrong\u003eVictory's Take\u003c\/strong\u003e\u003c\/h4\u003e\u003cp\u003eWe'd recommend the Era-E to Bosch Gen4 e-MTB owners who want lighter, tougher arms; bring the bike to Victory Bicycle Studio if you're unsure which motor generation you have.\u003c\/p\u003e\u003ch4\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e RaceFace Era-E eMTB Crank Arm Set\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eArm material:\u003c\/strong\u003e UD carbon with stainless-steel wear plates\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMotor interface:\u003c\/strong\u003e BG4 (Bosch Gen4)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCrank lengths:\u003c\/strong\u003e 160, 165, 170mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Black\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChainring:\u003c\/strong\u003e Not included\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded:\u003c\/strong\u003e Pedal boots, washers, spindle spacers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart numbers:\u003c\/strong\u003e CK23ERAE160BLK (160mm), CK23ERAE165BLK (165mm), CK23ERAE170BLK (170mm)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Race Face","offers":[{"title":"170Mm","offer_id":53537753039155,"sku":"CK23ERAE170BLK","price":498.99,"currency_code":"USD","in_stock":true},{"title":"165Mm","offer_id":53537753071923,"sku":"CK23ERAE165BLK","price":498.99,"currency_code":"USD","in_stock":false},{"title":"160Mm","offer_id":53537753104691,"sku":"CK23ERAE160BLK","price":498.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0981\/3685\/0739\/files\/2c353ea89b401ecdcb1e88d387c6b9950b599a5e.jpg?v=1782253103","url":"https:\/\/victorybicyclestudio.com\/products\/raceface-era-e-ebike-crank-arm-set-bg4-spindle-interface-carbon-black","provider":"Victory Bicycle Studio","version":"1.0","type":"link"}