{"product_id":"box-four-crankset","title":"Box Four Crankset","description":"\u003ch2\u003eBox Four Crankset\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Box Four is a cold-forged BMX crankset featuring a 24mm chromoly spindle and 104mm BCD 4-bolt spider. Available in 160mm, 165mm, and 170mm lengths, it includes an external BSA bottom bracket and dual pinch bolts for secure clamping.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCold Forged Construction\u003c\/strong\u003e – Manufacturing process compresses aluminum to increase density and strength; produces durable crank arms without material waste\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4-Bolt 104mm BCD Spider\u003c\/strong\u003e – Standard BMX chainring pattern compatible with Box and other brands offering 104mm 4-bolt chainrings\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e24mm Chromoly Spindle\u003c\/strong\u003e – High-strength steel spindle resists bending and provides durability for racing and freestyle applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e6061-T6 Aluminum Crank Arms\u003c\/strong\u003e – Lightweight yet rigid construction maintains strength while minimizing rotational weight\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExternal BSA Bottom Bracket Included\u003c\/strong\u003e – Pre-selected BB eliminates guesswork; compatible with standard external BB frames\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual Pinch Bolts\u003c\/strong\u003e – Two clamping bolts distribute force evenly across spindle, preventing slippage and damage\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLaser-Etched Graphics\u003c\/strong\u003e – Durable branding without added weight\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMultiple Crank Lengths\u003c\/strong\u003e – Available in 160mm, 165mm, and 170mm to accommodate different rider heights and preferences\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMatte Black Finish\u003c\/strong\u003e – Clean aesthetic compatible with most BMX builds\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCrank arm material: Cold-forged 6061-T6 aluminum\u003c\/li\u003e\n\u003cli\u003eSpindle material: 24mm chromoly steel\u003c\/li\u003e\n\u003cli\u003eSpindle diameter: 24mm\u003c\/li\u003e\n\u003cli\u003eBottom bracket: External BSA (included)\u003c\/li\u003e\n\u003cli\u003eChainring pattern: 4-bolt, 104mm BCD\u003c\/li\u003e\n\u003cli\u003eCrank length options: 160mm, 165mm, 170mm\u003c\/li\u003e\n\u003cli\u003eClamping system: Dual pinch bolts\u003c\/li\u003e\n\u003cli\u003eFinish: Matte black with laser-etched graphics\u003c\/li\u003e\n\u003cli\u003eWeight: Lightweight cold-forged construction\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCompatibility \u0026amp; Ideal Use Cases\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eExternal BSA bottom brackets\u003c\/strong\u003e – Includes compatible BB; works with standard external BSA BB frames\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4-bolt 104mm BCD chainrings\u003c\/strong\u003e – Compatible with Box and other brands offering 104mm 4-bolt chainrings (chainring sold separately)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBMX racing and freestyle\u003c\/strong\u003e – Suitable for all riding disciplines\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCrank length selection\u003c\/strong\u003e – Choose based on rider height and preference; 160mm–165mm standard for most adult riders, 170mm for taller riders\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBeginner to advanced riders\u003c\/strong\u003e – Versatile option for builds at any skill level\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eBuild Requirements \u0026amp; Compatibility\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eChainring\u003c\/strong\u003e – Sold separately; select 104mm BCD 4-bolt chainring to match your gearing needs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBottom bracket\u003c\/strong\u003e – Included external BSA BB; verify frame compatibility before ordering\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePedals\u003c\/strong\u003e – Not included; purchase separately with washers for secure installation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpoke tension\u003c\/strong\u003e – Use calibrated spoke tension meter for proper wheel building\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eImportant Notes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli style=\"list-style-type: none;\"\u003e\n\u003cul\u003e\n\u003cli\u003eBottom bracket included; no additional BB purchase required\u003c\/li\u003e\n\u003cli\u003eChainring sold separately; choose based on desired tooth count and riding style\u003c\/li\u003e\n\u003cli\u003eShips direct from manufacturer in USA; may ship separately from other orders\u003c\/li\u003e\n\u003cli\u003eCold-forged construction provides proven durability and lightweight performance\u003c\/li\u003e\n\u003cli\u003eDual pinch bolts require proper installation to prevent spindle damage; tighten evenly\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e \u003cdiv\u003e\u003cp.\u003e\u003ci\u003e\u003cu\u003e\u003cfont size=\"2\"\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/font\u003e\u003c\/u\u003e\u003c\/i\u003e\u003c\/p.\u003e\u003c\/div\u003e\u003cdiv style=\"\"\u003e\u003ci style=\"font-size: 0.875rem;\"\u003e\u003cu\u003e\u003cfont size=\"3\"\u003e\u003cb\u003e\u003cbr\u003e\u003c\/b\u003e\u003c\/font\u003e\u003c\/u\u003e\u003c\/i\u003e\u003c\/div\u003e\u003cdiv style=\"\"\u003e\u003ci style=\"font-size: 0.875rem;\"\u003e\u003cu\u003e\u003cfont size=\"3\"\u003e\u003cb\u003e**Due to unique nature of this item, ALL sales of this product are FINAL. No Refunds or Returns**\u003c\/b\u003e\u003c\/font\u003e\u003c\/u\u003e\u003c\/i\u003e\u003c\/div\u003e","brand":"BOX COMPONENTS","offers":[{"title":"Black \/ 160mm","offer_id":45392255287475,"sku":"BX-CK1742460-BK-Black-160mm","price":199.99,"currency_code":"USD","in_stock":true},{"title":"Black \/ 165mm","offer_id":45392255320243,"sku":"BX-CK1742460-BK-Black-165mm","price":199.99,"currency_code":"USD","in_stock":false},{"title":"Black \/ 170mm","offer_id":45392255353011,"sku":"BX-CK1742460-BK-Black-170mm","price":199.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0716\/8737\/2979\/files\/box-four-crankset_28287637-7a9e-450e-b5a3-e1fc63f17e14.jpg?v=1782674738","url":"https:\/\/time2shinebmx.com\/products\/box-four-crankset","provider":"Time 2 Shine ","version":"1.0","type":"link"}