{"product_id":"helix-core-e-spec-crank-165mm-bosch-e-thirteen-1","title":"ethirteen Helix Core espec Cranks for ISIS Spindle - 165mm, 26mm Offset, Black","description":"\u003cp data-path-to-node=\"3\"\u003eThe e\u003cem data-path-to-node=\"3\" data-index-in-node=\"5\"\u003ethirteen Helix Core e\u003c\/em\u003espec Cranks offer high-end drivetrain integrity and a premium look at an exceptional value. Forged from tough 6066-T6 aluminum, these versatile 165mm crank arms maximize pedaling leverage while offering improved ground clearance over traditional lengths on low-BB trail geometries. Featuring a wider 26mm offset for a generous, stable Q-factor on standard ISIS spindle motors, they come complete with an alloy self-extractor system, steel pedal washers, and molded impact boots.\u003c\/p\u003e\u003cbr\u003e\n\u003ch2 data-path-to-node=\"5\"\u003e \u003c\/h2\u003e\u003cbr\u003e\u003cbr\u003e\u003cp\u003e\u003cstrong\u003ee*thirteen Helix Core e*spec Cranks for ISIS Spindle Motor Systems - 165mm, 26mm Offset, Black\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\n\u003cp\u003eThe \u003cstrong\u003ee*thirteen Helix Core e*spec Cranks\u003c\/strong\u003e deliver an exceptional e-bike drivetrain upgrade, combining high-end structural integrity and refined aesthetics at an extreme value. Engineered to withstand the relentless torque and punishing loads of modern e-MTB riding, these cranks ensure you never have to hold back on your next gravity run. By blending a value-conscious production layout with robust construction, e*thirteen provides privateers and daily trail riders with a reliable alternative to premium-priced models without sacrificing trail confidence.\u003c\/p\u003e\u003cbr\u003e\n\u003cp\u003eThis model is engineered for standard \u003cstrong\u003e24mm ISIS spindle motor interfaces\u003c\/strong\u003e, offering seamless compatibility with the market's leading e-bike platforms—specifically optimizing layouts for the Bosch CX Gen 4\/Gen 5, Bosch SX, TQ HPR50, Brose S Mag, DJI Avinox, Yamaha, and Specialized 2.2\/3.1 motor systems. Featuring a wider \u003cstrong\u003e26mm offset\u003c\/strong\u003e (measured at 26.5mm offset geometry), these cranks are ideal for frames requiring maximum clearance around wide chainstays and chunky rear suspension pivots. This offset achieves a stable, highly balanced stance width with generous Q-factors depending on your motor: a precise 181mm on TQ platforms, 184mm on Bosch Gen 4 systems, and 197mm on Brose setups.\u003c\/p\u003e\u003cbr\u003e\n\u003cp\u003eAt a highly versatile \u003cstrong\u003e165mm length\u003c\/strong\u003e, these crank arms provide the ideal sweet spot for modern e-MTB geometries. They offer a more traditional, high-leverage power transfer feel that many riders prefer for out-of-the-saddle efforts, while still delivering improved ground clearance compared to standard 170mm or 175mm cranks. This helps minimize pedal strikes on technical, rocky climbs without forcing a dramatic change in your riding style or cadence. For ease of maintenance, the arms feature an integrated alloy self-extracting crank bolt system that makes routine home workshop servicing and installation quick, simple, and efficient.\u003c\/p\u003e\u003cbr\u003e\n\u003cp\u003eWeighing \u003cstrong\u003e513g\u003c\/strong\u003e, these stealthy black crank arms are forged from high-strength \u003cstrong\u003eAL 6066-T6 aluminum\u003c\/strong\u003e to ensure maximum durability against heavy rock strikes and accidental casing. e*thirteen packs this economic upgrade with premium attention to detail, including durable \u003cstrong\u003esteel pedal washers\u003c\/strong\u003e to protect the spindle threads from high-load deformation and \u003cstrong\u003ecustom-molded composite crank boots\u003c\/strong\u003e that act as a resilient shield against trail debris. Fully engineered for aggressive trail duty, the Helix Core e*spec cranks are backed by e*thirteen's dependable 5-year manufacturer warranty.\u003c\/p\u003e\u003cbr\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cbr\u003e\n\u003cul\u003e\n\u003cbr\u003e\n\u003cli\u003e\n\u003cstrong\u003eForged AL 6066-T6 Aluminum Construction:\u003c\/strong\u003e Delivers high-end durability, structural stiffness, and dependable trail strength at an accessible price point\u003c\/li\u003e\n\u003cbr\u003e\n\u003cli\u003e\n\u003cstrong\u003eVersatile 165mm Length:\u003c\/strong\u003e Delivers exceptional pedaling leverage and torque control while improving ground clearance over standard lengths to reduce pedal strikes\u003c\/li\u003e\n\u003cbr\u003e\n\u003cli\u003e\n\u003cstrong\u003eGenerous 26mm Wide Offset Profile:\u003c\/strong\u003e Provides ample clearance for wide chainstays and suspension pivots, yielding a stable and comfortable trail stance\u003c\/li\u003e\n\u003cbr\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard 24mm ISIS Compatibility:\u003c\/strong\u003e Designed for flawless integration with Bosch CX, Bosch SX, TQ HPR50, Brose S Mag, DJI Avinox, Yamaha, and Specialized systems\u003c\/li\u003e\n\u003cbr\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated Alloy Self-Extractor:\u003c\/strong\u003e Heavy-duty self-extracting bolt configuration makes installation and routine drivetrain maintenance efficient and tool-free\u003c\/li\u003e\n\u003cbr\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-End Hardware Inclusions:\u003c\/strong\u003e Comes equipped with durable steel pedal washers and high-impact molded protective crank boots for maximum longevity\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e\u003cbr\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cbr\u003e\n\u003cul\u003e\n\u003cbr\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e e*thirteen Helix Core e*spec Cranks\u003c\/li\u003e\n\u003cbr\u003e\n\u003cli\u003e\n\u003cstrong\u003eCrank Arm Length:\u003c\/strong\u003e 165mm\u003c\/li\u003e\n\u003cbr\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpindle Interface Type:\u003c\/strong\u003e 24mm ISIS Spindle\u003c\/li\u003e\n\u003cbr\u003e\n\u003cli\u003e\n\u003cstrong\u003eCrank Offset:\u003c\/strong\u003e 26mm (26.5mm architecture)\u003c\/li\u003e\n\u003cbr\u003e\n\u003cli\u003e\n\u003cstrong\u003eRealized Q-Factors:\u003c\/strong\u003e TQ: 181mm | Bosch G4: 184mm | Brose: 197mm\u003c\/li\u003e\n\u003cbr\u003e\n\u003cli\u003e\n\u003cstrong\u003eMotor System Compatibility:\u003c\/strong\u003e Bosch CX Gen4\/5, Bosch SX, TQ HPR50, Brose S Mag, DJI Avinox, Yamaha, Specialized (2.2\/3.1)\u003c\/li\u003e\n\u003cbr\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Forged AL 6066-T6 Aluminum\u003c\/li\u003e\n\u003cbr\u003e\n\u003cli\u003e\n\u003cstrong\u003ePedal Thread Interface:\u003c\/strong\u003e Includes Steel Pedal Washers\u003c\/li\u003e\n\u003cbr\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtraction Mechanism:\u003c\/strong\u003e Integrated Alloy Self-Extractor System\u003c\/li\u003e\n\u003cbr\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtective Hardware:\u003c\/strong\u003e Molded Composite Crank Boots Included\u003c\/li\u003e\n\u003cbr\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 513g\u003c\/li\u003e\n\u003cbr\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Black\u003c\/li\u003e\n\u003cbr\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 5 Years\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e\u003cbr\u003e\n\u003cp\u003eA durable, value-optimized alloy e-bike crank arm upgrade combining a balanced 165mm trail length with a generous 26mm offset, built for trail riders who demand high-end e-MTB strength, pivot clearance, and reliability without the premium price tag.\u003c\/p\u003e\u003cbr\u003e","brand":"Ethirteen","offers":[{"title":"CS5HSA-102","offer_id":50810576568599,"sku":null,"price":174.06,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0764\/3486\/6455\/files\/CS5ESA-102_01-1800x1800_4zFAJIK.jpg?v=1756851127","url":"https:\/\/shop.bikesandscooters.co.nz\/products\/helix-core-e-spec-crank-165mm-bosch-e-thirteen-1","provider":"Bikes \u0026 Scooters Marlborough","version":"1.0","type":"link"}