{"product_id":"sram-eagle-90-transmission-e-mtb-crank-arm-assembly-bosch-150mm-155mm-160mm-165mm-170mm","title":"SRAM Eagle 90 Transmission E-MTB Crank Arm Assembly – Bosch (150mm \/ 155mm \/ 160mm \/ 165mm \/ 170mm)","description":"\u003cp data-start=\"197\" data-end=\"460\"\u003eThe SRAM Eagle 90 Transmission E-MTB crank arm assembly is designed specifically for modern performance eMTBs—particularly riders looking for improved pedal clearance, cleaner drivetrain integration, and the ability to properly tune crank length to how they ride.\u003c\/p\u003e\n\u003cp data-start=\"462\" data-end=\"913\"\u003eBuilt from \u003cstrong data-start=\"473\" data-end=\"493\"\u003eforged aluminium\u003c\/strong\u003e, the Eagle 90 crank arms prioritise strength, durability, and reliability without unnecessary weight. SRAM positions this as a robust, dependable crank solution for aggressive trail, enduro, and eMTB riding where impact resistance matters just as much as aesthetics. SRAM lists the Bosch version at an engineering estimate of approximately \u003cstrong data-start=\"834\" data-end=\"842\"\u003e490g\u003c\/strong\u003e (based on 160mm with Bosch cap). \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"915\" data-end=\"1339\"\u003eThis Bosch version is designed around the \u003cstrong data-start=\"957\" data-end=\"983\"\u003eISIS spindle interface\u003c\/strong\u003e and is compatible with Bosch-equipped bikes, including \u003cstrong data-start=\"1039\" data-end=\"1065\"\u003eBosch CX BDU37 (Gen 4)\u003c\/strong\u003e and \u003cstrong data-start=\"1070\" data-end=\"1087\"\u003eBDU38 (Gen 5)\u003c\/strong\u003e systems. It also uses SRAM’s removable \u003cstrong data-start=\"1127\" data-end=\"1138\"\u003eGap Cap\u003c\/strong\u003e system, creating a cleaner interface between the crank arm and motor while maintaining compatibility with other ISIS spindle-based motor systems where applicable. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1341\" data-end=\"1384\"\u003eThe major advantage is crank length choice.\u003c\/p\u003e\n\u003cp data-start=\"1386\" data-end=\"1399\"\u003eAvailable in:\u003c\/p\u003e\n\u003cul data-start=\"1400\" data-end=\"1486\"\u003e\n\u003cli data-start=\"1400\" data-end=\"1409\"\u003e150mm\u003c\/li\u003e\n\u003cli data-start=\"1410\" data-end=\"1419\"\u003e155mm\u003c\/li\u003e\n\u003cli data-start=\"1420\" data-end=\"1429\"\u003e160mm\u003c\/li\u003e\n\u003cli data-start=\"1430\" data-end=\"1439\"\u003e165mm\u003c\/li\u003e\n\u003cli data-start=\"1440\" data-end=\"1486\"\u003e170mm \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1488\" data-end=\"1528\"\u003eThis allows riders to properly optimise:\u003c\/p\u003e\n\u003cul data-start=\"1529\" data-end=\"1661\"\u003e\n\u003cli data-start=\"1529\" data-end=\"1555\"\u003epedal strike clearance\u003c\/li\u003e\n\u003cli data-start=\"1556\" data-end=\"1578\"\u003ecadence efficiency\u003c\/li\u003e\n\u003cli data-start=\"1579\" data-end=\"1601\"\u003etechnical climbing\u003c\/li\u003e\n\u003cli data-start=\"1602\" data-end=\"1626\"\u003edescending stability\u003c\/li\u003e\n\u003cli data-start=\"1627\" data-end=\"1661\"\u003erider balance on steep terrain\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1663\" data-end=\"1842\"\u003eModern eMTBs are increasingly moving toward shorter crank lengths, particularly 160mm and below, because the real-world improvement on technical terrain is immediately noticeable.\u003c\/p\u003e\n\u003cp data-start=\"1844\" data-end=\"1920\"\u003eThis isn’t just a replacement crank arm—it’s a genuine ride quality upgrade.\u003c\/p\u003e\n\u003ch2 data-start=\"1927\" data-end=\"1946\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"1930\" data-end=\"1946\"\u003eKey Features\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul data-start=\"1947\" data-end=\"2649\"\u003e\n\u003cli data-start=\"1947\" data-end=\"2044\"\u003eForged aluminium crank arms for strength and durability \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2045\" data-end=\"2155\"\u003eBosch-specific eMTB compatibility (including CX Gen4 \/ Gen5 systems) \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2156\" data-end=\"2220\"\u003eISIS spindle interface \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2221\" data-end=\"2317\"\u003eAvailable in \u003cstrong data-start=\"2236\" data-end=\"2269\"\u003e150 \/ 155 \/ 160 \/ 165 \/ 170mm\u003c\/strong\u003e lengths \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2318\" data-end=\"2431\"\u003eRemovable Gap Cap for cleaner integration and compatibility flexibility \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2432\" data-end=\"2479\"\u003eBlack finish for clean OEM-style appearance\u003c\/li\u003e\n\u003cli data-start=\"2480\" data-end=\"2590\"\u003eApprox. weight: 490g (engineering estimate based on 160mm Bosch Cap) \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2591\" data-end=\"2649\"\u003eDesigned for aggressive trail, enduro, and eMTB riding\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-start=\"2656\" data-end=\"2690\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"2659\" data-end=\"2688\"\u003eTorque Collective Insight\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp data-start=\"2691\" data-end=\"2751\"\u003eThis is one of the smartest upgrades for modern Bosch eMTBs.\u003c\/p\u003e\n\u003cp data-start=\"2753\" data-end=\"2825\"\u003eMost riders still underestimate how much crank length changes ride feel.\u003c\/p\u003e\n\u003cp data-start=\"2827\" data-end=\"2865\"\u003eMoving away from long cranks improves:\u003c\/p\u003e\n\u003cul data-start=\"2866\" data-end=\"2991\"\u003e\n\u003cli data-start=\"2866\" data-end=\"2885\"\u003epedal clearance\u003c\/li\u003e\n\u003cli data-start=\"2886\" data-end=\"2908\"\u003etechnical climbing\u003c\/li\u003e\n\u003cli data-start=\"2909\" data-end=\"2933\"\u003ecornering confidence\u003c\/li\u003e\n\u003cli data-start=\"2934\" data-end=\"2956\"\u003ecadence efficiency\u003c\/li\u003e\n\u003cli data-start=\"2957\" data-end=\"2991\"\u003erider balance on steep terrain\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2993\" data-end=\"3007\"\u003eOn bikes like:\u003c\/p\u003e\n\u003cul data-start=\"3008\" data-end=\"3090\"\u003e\n\u003cli data-start=\"3008\" data-end=\"3022\"\u003eOrbea Wild\u003c\/li\u003e\n\u003cli data-start=\"3023\" data-end=\"3042\"\u003eNorco Range VLT\u003c\/li\u003e\n\u003cli data-start=\"3043\" data-end=\"3055\"\u003eYT Decoy\u003c\/li\u003e\n\u003cli data-start=\"3056\" data-end=\"3069\"\u003eTrek Rail\u003c\/li\u003e\n\u003cli data-start=\"3070\" data-end=\"3090\"\u003eSpecialized Levo\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"3092\" data-end=\"3142\"\u003e…shorter cranks make a very noticeable difference.\u003c\/p\u003e\n\u003cp data-start=\"3144\" data-end=\"3171\"\u003eThis is why we stock these.\u003c\/p\u003e\n\u003cp data-start=\"3173\" data-end=\"3260\"\u003eIt’s not about replacing worn cranks—it’s about properly optimising how the bike rides.\u003c\/p\u003e\n\u003cp data-start=\"3262\" data-end=\"3379\"\u003eFor heavier, aggressive eMTB riding, forged alloy also makes far more sense than chasing fragile lightweight options.\u003c\/p\u003e\n\u003cp data-start=\"3381\" data-end=\"3443\"\u003eThis is a practical performance upgrade riders genuinely feel.\u003c\/p\u003e\n\u003ch2 data-start=\"3450\" data-end=\"3469\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"3453\" data-end=\"3469\"\u003eFit \u0026amp; Sizing\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch3 data-start=\"3471\" data-end=\"3489\"\u003eLength Options\u003c\/h3\u003e\n\u003cul data-start=\"3490\" data-end=\"3579\"\u003e\n\u003cli data-start=\"3490\" data-end=\"3499\"\u003e150mm\u003c\/li\u003e\n\u003cli data-start=\"3500\" data-end=\"3509\"\u003e155mm\u003c\/li\u003e\n\u003cli data-start=\"3510\" data-end=\"3519\"\u003e160mm\u003c\/li\u003e\n\u003cli data-start=\"3520\" data-end=\"3529\"\u003e165mm\u003c\/li\u003e\n\u003cli data-start=\"3530\" data-end=\"3579\"\u003e170mm \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-start=\"3581\" data-end=\"3598\"\u003eCompatibility\u003c\/h3\u003e\n\u003cul data-start=\"3599\" data-end=\"3742\"\u003e\n\u003cli data-start=\"3599\" data-end=\"3623\"\u003eBosch-equipped eMTBs\u003c\/li\u003e\n\u003cli data-start=\"3624\" data-end=\"3650\"\u003eISIS spindle interface\u003c\/li\u003e\n\u003cli data-start=\"3651\" data-end=\"3676\"\u003eBosch CX Gen4 (BDU37)\u003c\/li\u003e\n\u003cli data-start=\"3677\" data-end=\"3742\"\u003eBosch CX Gen5 (BDU38) \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-start=\"3744\" data-end=\"3764\"\u003eGeneral Guidance\u003c\/h3\u003e\n\u003ch3 data-start=\"3766\" data-end=\"3779\"\u003e150–155mm\u003c\/h3\u003e\n\u003cp data-start=\"3780\" data-end=\"3789\"\u003eBest for:\u003c\/p\u003e\n\u003cul data-start=\"3790\" data-end=\"3918\"\u003e\n\u003cli data-start=\"3790\" data-end=\"3817\"\u003emaximum pedal clearance\u003c\/li\u003e\n\u003cli data-start=\"3818\" data-end=\"3844\"\u003every technical terrain\u003c\/li\u003e\n\u003cli data-start=\"3845\" data-end=\"3870\"\u003eaggressive descending\u003c\/li\u003e\n\u003cli data-start=\"3871\" data-end=\"3918\"\u003eriders prioritising clearance over leverage\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-start=\"3920\" data-end=\"3929\"\u003e160mm\u003c\/h3\u003e\n\u003cp data-start=\"3930\" data-end=\"3964\"\u003eBest all-round modern eMTB option:\u003c\/p\u003e\n\u003cul data-start=\"3965\" data-end=\"4051\"\u003e\n\u003cli data-start=\"3965\" data-end=\"3988\"\u003eexcellent clearance\u003c\/li\u003e\n\u003cli data-start=\"3989\" data-end=\"4017\"\u003estrong climbing position\u003c\/li\u003e\n\u003cli data-start=\"4018\" data-end=\"4051\"\u003ebalanced cadence and leverage\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-start=\"4053\" data-end=\"4066\"\u003e165–170mm\u003c\/h3\u003e\n\u003cp data-start=\"4067\" data-end=\"4076\"\u003eBest for:\u003c\/p\u003e\n\u003cul data-start=\"4077\" data-end=\"4169\"\u003e\n\u003cli data-start=\"4077\" data-end=\"4115\"\u003eriders preferring traditional feel\u003c\/li\u003e\n\u003cli data-start=\"4116\" data-end=\"4135\"\u003eflatter terrain\u003c\/li\u003e\n\u003cli data-start=\"4136\" data-end=\"4169\"\u003emore seated climbing leverage\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"4171\" data-end=\"4232\"\u003eFor most aggressive eMTB riders, \u003cstrong data-start=\"4204\" data-end=\"4231\"\u003e160mm is the sweet spot\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch2 data-start=\"4239\" data-end=\"4258\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"4242\" data-end=\"4258\"\u003eWho It’s For\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul data-start=\"4259\" data-end=\"4489\"\u003e\n\u003cli data-start=\"4259\" data-end=\"4280\"\u003eBosch eMTB riders\u003c\/li\u003e\n\u003cli data-start=\"4281\" data-end=\"4326\"\u003eTrail, enduro, and aggressive eMTB riders\u003c\/li\u003e\n\u003cli data-start=\"4327\" data-end=\"4382\"\u003eRiders wanting shorter cranks for performance gains\u003c\/li\u003e\n\u003cli data-start=\"4383\" data-end=\"4429\"\u003eRiders upgrading from 165\/170mm crank arms\u003c\/li\u003e\n\u003cli data-start=\"4430\" data-end=\"4489\"\u003eRiders wanting premium OEM-level drivetrain integration\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-start=\"4496\" data-end=\"4519\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"4499\" data-end=\"4519\"\u003eWho It’s Not For\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul data-start=\"4520\" data-end=\"4699\"\u003e\n\u003cli data-start=\"4520\" data-end=\"4586\"\u003eNon-Bosch bike owners (unless ISIS compatibility is confirmed)\u003c\/li\u003e\n\u003cli data-start=\"4587\" data-end=\"4640\"\u003eLightweight XC riders prioritising minimal weight\u003c\/li\u003e\n\u003cli data-start=\"4641\" data-end=\"4699\"\u003eRiders wanting full cranksets with chainrings included\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Torque Collective","offers":[{"title":"150MM","offer_id":57050371555703,"sku":"CW8702000","price":95.0,"currency_code":"GBP","in_stock":true},{"title":"155MM","offer_id":57050371588471,"sku":"CW8702001","price":95.0,"currency_code":"GBP","in_stock":true},{"title":"160MM","offer_id":57050371621239,"sku":"CW8702002","price":95.0,"currency_code":"GBP","in_stock":true},{"title":"165MM","offer_id":57050371654007,"sku":"CW8702003","price":95.0,"currency_code":"GBP","in_stock":true},{"title":"170MM","offer_id":57050371686775,"sku":"CW8702004","price":95.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0975\/4224\/2679\/files\/CW8702000_BLACK.jpg?v=1777360524","url":"https:\/\/torquecollective.uk\/products\/sram-eagle-90-transmission-e-mtb-crank-arm-assembly-bosch-150mm-155mm-160mm-165mm-170mm","provider":"Torque Collective","version":"1.0","type":"link"}