The Forecaster is a model that rides, feels and looks like a pro-level bike with a full 100% chromoly frame. The Forecaster BMX Bike is designed for riders who demand optimal performance. Built with a full 100% chromoly frame, this bike offers maximum durability and strength for your next ride.

You’ll find other Sunday Signature spec’d design cues like the Sunday Seeley Grips, combined with incredible parts like an Odyssey Clutch v2 Freecoaster hub, Odyssey Twisted Pro pedals, and Path Pro tires.

A truly dialed bike for every style of riding.

Key Features

  • 100% Chromoly Frame
  • Odyssey Clutch v2 Freecoaster
  • Sealed Front and Rear Hubs
  • Odyssey Stage 1 Rims
  • Removable Brake Hardware
  • Odyssey Broc Raiford Grips
  • Odyssey Twisted Pro Pedals
  • Sunday Freeze Top Load Stem
  • Odyssey Springfield Brakes and Lever
  • Odyssey Path Pro OEM 2.40" Tires
  • Sunday Badge Pivotal Seat
  • FSA Conical Headset

Frame Geometry 

Top Tube Length: 20.75" 
Head Tube Angle: 75.5° 
Seat Tube Angle: 71° 
Chainstay Length: 13.2-13.5” 
Bottom Bracket Height: 11.7" 
Standover: 9" 

Handlebar Geometry 

Rise: 9" 
Width: 29" 
Backsweep: 12° 
Upsweep: 3° 

    Sunday

    Forecaster BMX Bike

    $579.95

    Size Guide

    Choosing the right size BMX bike is crucial for comfort, control, and performance. This guide will help you understand the ideal tire size and top tube length based on age ranges to ensure a perfect fit for riders of all ages.

    Age Ranges and Recommended BMX Bike Sizes

    1. Ages 2-5 (12" Tire)

      • Tire Size: 12 inches
      • Top Tube Length: 12-13.5 inches
      • Description: These bikes are designed for the youngest riders, offering stability and easy handling to help them learn the basics.
    2. Ages 5-7 (14" Tire)

      • Tire Size: 14 inches
      • Top Tube Length: 14-15.5 inches
      • Description: Slightly larger than the 12" bikes, these are ideal for children gaining confidence and control.
    3. Ages 7-9 (16" Tire)

      • Tire Size: 16 inches
      • Top Tube Length: 16-17.5 inches
      • Description: Suitable for young riders developing their skills and needing a bit more space for comfort.
    4. Ages 9-12 (18" Tire)

      • Tire Size: 18 inches
      • Top Tube Length: 17-18.5 inches
      • Description: Perfect for pre-teens who are serious about riding and need a bike that offers more stability and control.
    5. Ages 12-14 (20" Tire)

      • Tire Size: 20 inches
      • Top Tube Length: 18-19.5 inches
      • Description: This size is common among teenage riders and provides a good balance of control and agility.
    6. Ages 14+ (20" Tire)

      • Tire Size: 20 inches
      • Top Tube Length: 20-21.5 inches
      • Description: For older teens and adults, the 20" bike with a longer top tube offers enhanced performance for tricks and stunts.

    BMX Bike Size Chart

    Age Range Tire Size Top Tube Length
    2-5 12 inches 12-13.5 inches
    5-7 14 inches 14-15.5 inches
    7-9 16 inches 16-17.5 inches
    9-12 18 inches 17-18.5 inches
    12-14 20 inches 18-19.5 inches
    14+ 20 inches 20-21.5 inches

     

    Additional Tips for Choosing the Right BMX Bike

    • Consider Growth: For growing children, consider a bike that allows for some adjustment in the seat and handlebars.
    • Safety Gear: Ensure the rider has proper safety gear, including a helmet, gloves, and pads, especially for younger riders.

    Selecting the right BMX bike size based on tire size and top tube length will enhance the riding experience, offering better control, comfort, and safety. Use this guide to find the perfect fit for riders of all ages. Happy riding!

    Out of stock
    PRO SETUP Expert Assembly 95% Ready to ride out of the box.
    CERTIFIED Master Mechanic Assembly Precision dialed before shipping.
    SINCE 1992 Over 30 Years of Trust Decades of cycling expertise.

    SKU: SBX-239-MMAR

    The Forecaster is a model that rides, feels and looks like a pro-level bike with a full 100% chromoly frame. The Forecaster BMX Bike is designed for riders who demand optimal performance. Built with a full 100% chromoly frame, this bike offers maximum durability and strength for your next ride.

    You’ll find other Sunday Signature spec’d design cues like the Sunday Seeley Grips, combined with incredible parts like an Odyssey Clutch v2 Freecoaster hub, Odyssey Twisted Pro pedals, and Path Pro tires.

    A truly dialed bike for every style of riding.

    Key Features

    • 100% Chromoly Frame
    • Odyssey Clutch v2 Freecoaster
    • Sealed Front and Rear Hubs
    • Odyssey Stage 1 Rims
    • Removable Brake Hardware
    • Odyssey Broc Raiford Grips
    • Odyssey Twisted Pro Pedals
    • Sunday Freeze Top Load Stem
    • Odyssey Springfield Brakes and Lever
    • Odyssey Path Pro OEM 2.40" Tires
    • Sunday Badge Pivotal Seat
    • FSA Conical Headset

    Frame Geometry 

    Top Tube Length: 20.75" 
    Head Tube Angle: 75.5° 
    Seat Tube Angle: 71° 
    Chainstay Length: 13.2-13.5” 
    Bottom Bracket Height: 11.7" 
    Standover: 9" 

    Handlebar Geometry 

    Rise: 9" 
    Width: 29" 
    Backsweep: 12° 
    Upsweep: 3° 

      SPECIFICATIONS

      Frame: Sunday Forecaster, 20.75" TT, 100% chromoly frame with integrated 1-1/8" head tube, and removable brake hardware
      Fork: Sunday Forecaster, 20" fork w/ 2-piece chromoly steerer tube and welded pre-load 
      Handlebar: Sunday, 4-piece 
      Stem: Sunday Freeze front load, 48mm 
      Headset:  FSA integrated conical, 1-1/8" 
      Alloy Cap: Sunday M16, aluminum 
      Brake Lever:  Odyssey Springfield 
      Brakes: Odyssey Springfield U-brake 
      Brake Cable:  Odyssey Quik Slic 
      Grips: Odyssey Broc Raiford
      Seat: Sunday Badge, Pivotal
      Seat post:  Sunday Pivotal 
      Seat Clamp: Sunday 
      Sprocket: Sunday Sabertooth v2, 25T, steel 
      Cranks: 170mm, 3-piece, chromoly 
      BB Parts: Sealed, Mid, 19mm 
      Pedals: Odyssey Twisted PC Pro 
      Rims: Odyssey Stage 1, 20", 36H
      Front Hub: Sunday, 36H, low-flange, sealed , 3/8" female axle 
      Rear Hub: Odyssey Clutch v2 freecoaster, 36H, 14mm female axle w/ 9T driver, RHD, non-drive side plastic guard 
      Spokes: 14g steel, black 
      Tires: Odyssey Path Pro OEM, 20 x 2.4" (F & R) 
      Chain: KMC Z1 wide
      Approx. Weight: 26.78lbs (with brakes)