{"product_id":"bucklos-aluminum-alloy-bike-crank-arms-152-170-175mm","title":"BUCKLOS 152\/170\/175mm Aluminum Alloy Bike Crank Arms","description":"\n\u003ch2\u003eBUCKLOS Aluminum Alloy Bicycle Crank Arms – 152 \/ 170 \/ 175 mm\u003c\/h2\u003e\n\u003cp\u003eUpgrade or replace your worn-out crank arms with BUCKLOS's high-strength AL6061 aluminum alloy crank arms. Available in three lengths and multiple hole configurations, these crank arms are engineered for smooth, stable power transfer on e-bikes, indoor spinning bikes, mountain bikes, and road bicycles. Easy to install and built to last. Made in Mainland China.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePremium AL6061 Aluminum Alloy\u003c\/strong\u003e – High hardness construction for long-lasting durability and strength under demanding riding conditions.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThree Length Options\u003c\/strong\u003e – Choose from 152 mm, 170 mm, or 175 mm (length = distance between the two holes) to match your bike's geometry perfectly.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMultiple Hole Shapes\u003c\/strong\u003e – Available in Square, Diamond, and Spline hole configurations to fit a wide variety of bottom bracket standards.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTwo Configuration Options\u003c\/strong\u003e – Order as a Left Crank Arm only, or as a complete Left + Right Crank Arm set for a full replacement.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStable Power Transmission\u003c\/strong\u003e – Precisely machined for consistent, wobble-free pedaling efficiency on every ride.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEasy Installation\u003c\/strong\u003e – Straightforward fit designed for quick, hassle-free mounting without special tools.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVersatile Compatibility\u003c\/strong\u003e – Ideal for e-bikes, indoor spinning bikes, mountain bikes, and road bicycles.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBUCKLOS\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAL6061 Aluminum Alloy\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAvailable Lengths\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e152 mm \/ 170 mm \/ 175 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHole Shape\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSquare \/ Diamond \/ Spline\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eConfiguration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLeft Crank Arm only OR Left + Right Crank Arm set\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight (L+R, Square\/Diamond)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e152 mm ≈ 0.40 kg | 170 mm ≈ 0.50 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight (Left only, Square\/Diamond)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e152 mm ≈ 0.19 kg | 170 mm ≈ 0.24 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompatible Bikes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eE-Bikes, Spinning \/ Indoor Bikes, Mountain Bikes, Road Bikes\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOrigin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMade in Mainland China\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWhy Choose BUCKLOS Crank Arms?\u003c\/h3\u003e\n\u003cp\u003eWhether you're restoring a vintage road bike, maintaining your electric commuter, or keeping your indoor spinning bike in top shape, BUCKLOS crank arms deliver the reliability you need. The robust AL6061 alloy resists flex and fatigue, while the multiple hole-shape options ensure you'll find a compatible fit for your existing bottom bracket. Stop riding on worn or damaged cranks — swap them out quickly with BUCKLOS and get back on the road with confidence.\u003c\/p\u003e\n\n\u003ch3\u003eYou May Also Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/2m-light-stand-folding-telescoping-tripod-adjustable-photography-floor-lamp-holder-tripod-for-outdoor-picnics-camping-hiking\"\u003e2m Folding Telescoping Tripod – Great for Outdoor \u0026amp; Camping\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1pc-10g-high-grade-silicon-grease-lubricant-o-lubrication-good-odorless-smoothness-for-o-rings-tube-silicone-grease-lubricant\"\u003eSilicone Grease Lubricant – Keep Moving Parts Smooth\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/3pcs-silicone-sealant-scraper-set-multi-functional-caulking-nozzle-tools-for-tile-floor-joints-grout-finishing-and-renovation\"\u003e3-Piece Multi-Functional Scraper Tool Set\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/medlineplus.gov\/benefitsofexercise.html\" target=\"_blank\" rel=\"noopener\"\u003eMedlinePlus on the benefits of exercise\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What does the crank arm length (152 mm, 170 mm, 175 mm) refer to?\u003c\/h4\u003e\n\u003cp\u003eA: The length refers to the distance between the two mounting holes on the crank arm — the bottom bracket spindle hole and the pedal axle hole. Choosing the correct length ensures proper fit and comfortable pedaling cadence for your body and bike frame. 170 mm is the most common size for standard adult bicycles.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Which hole shape should I choose — Square, Diamond, or Spline?\u003c\/h4\u003e\n\u003cp\u003eA: The hole shape must match your bottom bracket spindle. Square taper is the most traditional and widely used standard; Diamond (also a taper variant) suits specific bottom bracket designs; and Spline fits ISIS or similar splined bottom brackets. Check your existing bottom bracket spindle or consult your bike's manual before ordering.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Are these crank arms compatible with my electric bike or indoor spinning bike?\u003c\/h4\u003e\n\u003cp\u003eA: Yes! The Left + Right crank arm set is specifically noted as suitable for e-bikes and indoor spinning bikes. Make sure to verify that your bottom bracket spindle hole shape and crank arm length match your bike's requirements before purchasing.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Can I buy just one (left) crank arm, or do I need to buy a pair?\u003c\/h4\u003e\n\u003cp\u003eA: Both options are available. You can purchase a Left Crank Arm only for a single-side replacement, or order the Left + Right set for a complete crank arm upgrade. Select the configuration that fits your needs at checkout.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What does the crank arm length (152 mm, 170 mm, 175 mm) refer to?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The length refers to the distance between the two mounting holes on the crank arm — the bottom bracket spindle hole and the pedal axle hole. Choosing the correct length ensures proper fit and comfortable pedaling cadence for your body and bike frame. 170 mm is the most common size for standard adult bicycles.\"}}, {\"@type\": \"Question\", \"name\": \"Which hole shape should I choose — Square, Diamond, or Spline?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The hole shape must match your bottom bracket spindle. Square taper is the most traditional and widely used standard; Diamond (also a taper variant) suits specific bottom bracket designs; and Spline fits ISIS or similar splined bottom brackets. Check your existing bottom bracket spindle or consult your bike's manual before ordering.\"}}, {\"@type\": \"Question\", \"name\": \"Are these crank arms compatible with my electric bike or indoor spinning bike?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes! The Left + Right crank arm set is specifically noted as suitable for e-bikes and indoor spinning bikes. 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