Focus Whistler 3.9
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A wheel size that fits your height
With WHISTLER you get the ideal wheel size to match your height and needs: WHISTLER in sizes XL to M comes with 29" wheels. Sizes S and XS have 27.5" wheels.
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Reliable braking power and integrated design
When facing risky situations, you need a partner you can rely on. That’s why we equipped our WHISTLER with disc brakes to ensure consistent braking performance and optimal braking behavior in all weather conditions. We route all cables through the frame’s down tube for better protection and durability and a clean look.
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Ready for your riding requirements
To let you fully customize your bike to your needs, you have the option to mount a rack, a fender, a light, and a kickstand.
WHISTLER 3.9 Features
Rock Shox Judy TK Air fork
Shimano SLX/Deore 1x12
Capability to mount racks & fenders
Specifications
*The manufacturer reserves the right to change website information without notice, including specifications, models, colors, and materials.
*Images are for illustrative purposes only and may not correspond to the product description.Size chart

| Segment | Section | XS | S | M | L | XL |
|---|---|---|---|---|---|---|
| Size in mm | 340 | 360 | 420 | 460 | 500 | |
| Handlebar width | 720 | 720 | 720 | 720 | 720 | |
| Handlebar stem length | 60 | 60 | 60 | 60 | 60 | |
| Crank length | 170 | 170 | 170 | 170 | 170 | |
| Seatpost length | 420 | 500 | 420 | 460 | 500 | |
| A | Seat tube length | 340 | 360 | 420 | 460 | 500 |
| B | Top tube length | 549 | 574 | 606 | 636 | 666 |
| C | Steering angle (°) | 68 | 68 | 68 | 68 | 68 |
| D | Seat tube angle (°) | 74 | 74 | 74 | 74 | 74 |
| E | Horizontal chainstay length | 440 | 400 | 450 | 450 | 450 |
| F | Bottom bracket drop | 48 | 48 | 60 | 60 | 60 |
| G | Head tube length | 120 | 120 | 120 | 140 | 160 |
| H | Fork length | 497 | 497 | 515 | 515 | 515 |
| I | Fork offset | 42 | 42 | 51 | 51 | 51 |
| J | Wheelbase | 1079 | 1104 | 1155 | 1187 | 1220 |
| K | Stack | 605 | 605 | 630 | 649 | 667 |
| L | Reach | 375 | 400 | 425 | 450 | 475 |