{"product_id":"bucklos-mtb-single-speed-104bcd-crankset-lightweight-durable-upgrade","title":"BUCKLOS MTB Single Speed 104BCD Crankset - Lightweight Durable Upgrade","description":"\u003cp\u003eIn this review of the BUCKLOS MTB Single Speed 104BCD crankset the bottom line is clear: this is a practical, lightweight upgrade for single speed mountain, commuter, and electric bikes where simplicity and reduced weight matter most. The crankset delivers a dependable square taper interface and a choice of narrow-wide chainrings that improve chain retention and save weight compared with multi-ring setups. Installation is straightforward for anyone comfortable with basic hand tools, so riders seeking a clean, single-speed drivetrain will find a lot to like here.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltralight crankset:\u003c\/strong\u003e The 104 BCD crankset weighs about 609g, reducing rotating mass for a snappier feel on climbs and accelerations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNarrow-wide chainring:\u003c\/strong\u003e Available in 32\/34\/36\/38\/40\/42T and round or oval shapes, the chainring holds the chain securely for single speed use and fits common crank standards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable construction:\u003c\/strong\u003e Built to last for mountain bikes, commuter bikes, and e-bikes, the crankset balances low weight with longevity for regular riding.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSingle speed design:\u003c\/strong\u003e The crank and chainring are intended for single speed drivetrains only, simplifying setup and reducing maintenance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEasy to install:\u003c\/strong\u003e The square taper interface and included chainring bolts make installation simple for riders familiar with a hex wrench.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMultiple color and shape options:\u003c\/strong\u003e Choose black or red and round or oval chainring profiles to match ride preference and bike aesthetics.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis crankset is aimed at riders who want a straightforward, lightweight single speed solution for a mountain bike, commuter bike, or e-bike conversion. It suits riders upgrading from heavy multi-chainring setups or stock cranks, and those who prioritize chain retention and a cleaner drivetrain layout.\u003c\/p\u003e\n\u003cp\u003eRiders who need a multi-speed compatible crankset or integrated bottom bracket systems should look elsewhere, as this product is explicitly for single speed use and uses a square taper interface rather than modern integrated spindle standards.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLightweight design at about 609g gives a noticeable weight saving over 3x setups.\u003c\/li\u003e\n\u003cli\u003eChoice of chainring sizes and oval or round profiles offers tuning for cadence and gear feel.\u003c\/li\u003e\n\u003cli\u003eEasy installation for anyone comfortable with basic tools and hex wrenches.\u003c\/li\u003e\n\u003cli\u003eGood value and solid build quality reported by riders upgrading older bikes.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eOnly suitable for single speed drivetrains, so it is not compatible with derailleurs or multi-speed setups.\u003c\/li\u003e\n\u003cli\u003eUses square taper interface, which may not fit frames requiring modern spindle crank standards without adapters.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eBUCKLOS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCrankset weight\u003c\/td\u003e\n\u003ctd\u003eAbout 609g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChainring options\u003c\/td\u003e\n\u003ctd\u003e32\/34\/36\/38\/40\/42T, round or oval\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChainring thickness\u003c\/td\u003e\n\u003ctd\u003eNarrow 1.9mm \/ Wide 3.7mm (4mm overall)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eFits single speed bikes; compatible with Shimano, SRAM, FSA chainrings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMount type\u003c\/td\u003e\n\u003ctd\u003e104 BCD, square taper\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage contents\u003c\/td\u003e\n\u003ctd\u003e1 crankset, 1 single speed chainring, 4 chainring bolts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe BUCKLOS 104BCD single speed crankset is a sensible, cost-effective upgrade for riders who want to simplify their drivetrain and shed weight without complex installation. Its narrow-wide chainring options and reliable square taper design make it a practical choice for mountain, commuter, and e-bike single speed builds, offering solid value for money for the right rider.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eIs this crankset compatible with multi-speed drivetrains?\u003c\/strong\u003e\u003cbr\u003eNo. This crankset and chainring are intended for single speed use only and are not compatible with derailleur systems.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat bottom bracket interface does it use?\u003c\/strong\u003e\u003cbr\u003eThe crankset uses a square taper spindle interface, so confirm your bottom bracket type before purchasing.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes the package include chainring bolts?\u003c\/strong\u003e\u003cbr\u003eYes. The package includes one crankset, one single speed chainring, and four chainring bolts for installation.\u003c\/p\u003e","brand":"BUCKLOS","offers":[{"title":"Default Title","offer_id":48681179840731,"sku":"B08L99Y1V3","price":36.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/71Xyzs37ylL._AC_SL1500.jpg?v=1778716054","url":"https:\/\/gearmusthave.com\/products\/bucklos-mtb-single-speed-104bcd-crankset-lightweight-durable-upgrade","provider":"GearMustHave","version":"1.0","type":"link"}