{"product_id":"rant-bangin-8-bmx-crankset-175mm-19mm","title":"Rant Bangin 8 Crankset — 175mm, 19mm 8-Spline, Chromoly (Chrome)","description":"\u003cp\u003eThis is the Rant Bangin 8 BMX crankset built from heat-treated 4130 chromoly for strength and durability under hard riding.\u003c\/p\u003e \u003cp\u003eDesigned for park, street, and trail use, the trapezoid tubular arms reduce flex while still offering a grind-friendly surface.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eKey Functional Details\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e175mm crank arm length\u003c\/li\u003e \u003cli\u003eHeat-treated 4130 tubular chromoly arms\u003c\/li\u003e \u003cli\u003eTrapezoid arm profile for improved stiffness\u003c\/li\u003e \u003cli\u003eWrap-welded pedal bosses for added strength\u003c\/li\u003e \u003cli\u003e8-spline pinch bolt interface\u003c\/li\u003e \u003cli\u003eIncludes 19mm x 150mm spindle\u003c\/li\u003e \u003cli\u003eRHD and LHD compatible sprocket bosses\u003c\/li\u003e \u003cli\u003eWeight: approx. 34.5oz\u003c\/li\u003e \u003cli\u003eSingle-speed BMX application\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eCompatibility \u0026amp; Technical Notes\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eDesigned for BMX frames using 19mm 8-spline bottom bracket systems\u003c\/li\u003e \u003cli\u003eIncludes 150mm spindle\u003c\/li\u003e \u003cli\u003eCompatible with RHD and LHD drivetrain setups\u003c\/li\u003e \u003cli\u003eRequires compatible 19mm BMX bottom bracket (not included unless specified)\u003c\/li\u003e \u003cli\u003eNOT compatible with 24mm, 22mm, or 48-spline systems\u003c\/li\u003e \u003cli\u003eNOT intended for geared MTB or road drivetrains\u003c\/li\u003e \u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eService \/ Ownership Context\u003c\/strong\u003e\u003c\/p\u003e \u003cp\u003eThis is a durable mid-level BMX crankset intended for aggressive riding. Proper torque on pinch bolts and regular inspection are recommended for long-term reliability.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eFit \u0026amp; Use Signals\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eGood Fit:\u003c\/strong\u003e BMX park, street, and trail riders running 19mm 8-spline bottom bracket setups.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eNot A Fit:\u003c\/strong\u003e MTB, road, gravel bikes, or riders running 22mm or 24mm spindle systems.\u003c\/li\u003e \u003c\/ul\u003e \u003c!-- Internal SKU Recommendation: Base SKU: RANT-BANGIN8-175-19-CP UPC: None --\u003e \u003cdiv data-ai=\"mechanic-insight\" style=\"display:none\"\u003e Solid mid-tier BMX crank. 4130 heat-treated chromoly is legit for street and park abuse.\nTrapezoid profile stiffens the arm compared to round tubes. Not as high-end as 48-spline setups, but strong enough for most riders.\nBiggest mistake customers make: assuming any 19mm crank fits any BB. Needs a 19mm BMX mid or Spanish BB depending on frame. Confirm frame spec first.\nPinch bolt interface must be torqued properly and checked after first few rides. BMX riders don’t always re-check and that’s when arms start creaking.\nWrap-welded pedal bosses are strong but pedal threads still strip if riders cross-thread or don’t grease pedals.\nWho this is really for: intermediate BMX riders, park\/street\/trails, someone upgrading from stock one-piece or entry-level 3-piece cranks.\nWho should avoid: serious street riders looking for 48-spline or riders over 220+ lbs who ride hard street daily.\nCommon failures: loose pinch bolts, worn spindle splines from improper torque, stripped pedal threads.\nMechanic advice: grease spindle splines lightly, torque evenly, use threadlocker on sprocket bolt if applicable, and check torque after break-in.\n\u003c\/div\u003e","brand":"RANT","offers":[{"title":"Default Title","offer_id":53069942620474,"sku":"RANT-BANGIN8-175-19-CP","price":95.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0745\/5735\/8394\/files\/211637.jpg?v=1771790483","url":"https:\/\/gograva.com\/products\/rant-bangin-8-bmx-crankset-175mm-19mm","provider":"Grava Adventure Corporation","version":"1.0","type":"link"}