Beringer Junior 2 Crankset Product Overview The Beringer Junior 2 is a CNC-machined 6082 aluminum crankset with integrated 24mm steel spindle designed for junior BMX racing. Available in 155mm, 160mm, and 165mm lengths, it features 104 BCD 4-bolt compatibility, optimized Q-factor (154mm), and precision chain line geometry. Key Features CNC Machined 6082 Aluminum – Precision-cut aerospace-grade aluminum provides strength and durability with minimal weight Integrated Steel Spindle – 24mm steel spindle offers superior strength and precision fit compared to aluminum alternatives Color Anodized Finish – Black protective coating resists corrosion and provides professional aesthetics Laser-Engraved Branding – Durable branding without added weight 104 BCD 4-Bolt Pattern – Compatible with standard BMX chainrings; enables straightforward gear changes Optimized Q-Factor – 154mm Q-factor (crank spacing) provides ergonomic pedaling position for efficient power transfer Precision Chain Line – 42.5–43.5mm chain line geometry ensures optimal drivetrain alignment and cog compatibility Multiple Crank Lengths – Available in 155mm, 160mm, and 165mm to accommodate different junior rider heights Lightweight Construction – Optimized weights (585–615g range) ideal for racing-focused youth builds Professional Racing Design – Engineered specifically for competitive BMX racing applications Technical Specifications Material: CNC machined 6082 aluminum with integrated 24mm steel spindle BCD: 104mm Bolt pattern: 4-bolt Spindle diameter: 24mm (steel) Crank length options: 155mm (585g), 160mm (600g), 165mm (615g) Q-factor: 154mm Chain line: 42.5–43.5mm Finish: Black color anodizing with laser engraving Bottom bracket: Not included Included Components Left crank with M6 screws and support ring Right crank with assembled spindle, support ring, and aluminum adjustment screw Aluminum spacers for bottom bracket position adjustment Compatibility & Ideal Use Cases Junior BMX racing – Purpose-built for junior competitive racing and training 104 BCD chainrings – Compatible with standard 104mm BCD 4-bolt chainrings Press-fit or threaded bottom brackets – Aluminum spacers allow adjustment for different BB types (BB not included) Crank length selection – Choose based on rider height: 155mm (younger/smaller), 160mm (standard junior), 165mm (taller junior) Racing-focused builds – Lightweight construction and precision geometry ideal for competition Junior and youth riders – Designed for smaller frames and younger BMX racers Build Requirements & Compatibility Bottom bracket required – Purchase separately based on your frame's BB shell size and type; spacers included for adjustment 104 BCD chainring – Select 104mm BCD 4-bolt chainring to match your gearing needs (sold separately) Pedals and crank bolts – M6 screws included for left crank; use standard BMX crank bolts for pedal attachment Chain line verification – Adjust aluminum spacers to achieve 42.5–43.5mm chain line for optimal drivetrain performance Important Notes Bottom bracket not included; purchase based on your frame's BB shell specification Crank length selection critical for proper ergonomics; verify rider height and preference before ordering 24mm steel spindle provides superior precision compared to aluminum alternatives Q-factor 154mm optimized for junior rider positioning and pedaling efficiency Chain line 42.5–43.5mm requires spacer adjustment for precise alignment with cogs CNC machining and integrated spindle represent professional-grade junior racing component Laser engraving adds durability without weight penalty Dedicated for BMX racing competition; not recommended for casual or heavy abuse applications **Due to unique nature of this item, ALL sales of this product are FINAL. No Refunds or Returns**
