Focus Whistler 3.9
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The Focus Whistler 3.9 is a new MTB hardtail, available in sizes S/38, M/42, L/46 and XL/50. The RockShox Judy TK Air fork offers 80mm of travel in S and 100mm from M to XL: an option for you if you are looking for a bike for trail rides.
- Shimano 1x12 drivetrain: The build combines Shimano Deore components with a SLX M7100 derailleur, a 32 chainring and a 10-51 cassette.
- Wheels by frame size: Size S uses 27.5" wheels, while M, L and XL use 29" wheels.
- Shimano MT200 brakes: The Shimano MT200 brakes work with a 180 mm front disc and a 160 mm rear disc.
- Aluminium frame: The 6061 aluminium frame routes the cables inside the down tube.
- Schwalbe Smart Sam tyres: The bike comes with Schwalbe Smart Sam tyres with a width of 2.25 for your rides.
You can choose it for your MTB rides and customise it to suit your needs: the frame allows you to add a pannier rack and mudguards.
Manufacturer's details
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A wheel size to suit your height
With WHISTLER, you get the ideal wheel size for 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 faced with risky situations, you need a partner you can rely on. That is why we have equipped our WHISTLER with disc brakes to ensure consistent braking performance and optimal braking 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 adapt your bike to your needs, you have the option of fitting a pannier rack, a mudguard, a light and a kickstand.
WHISTLER 3.9 Features
Rock Shox Judy TK Air fork
Shimano SLX/Deore 1x12
Option to fit a pannier rack & mudguards
Specifications
*The manufacturer reserves the right to change the information on the website without notice, including specifications, models, colours and materials.
*Images are for illustrative purposes only and may not match 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 | |
| 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 | Head angle (°) | 68 | 68 | 68 | 68 | 68 |
| D | Seat tube angle (°) | 74 | 74 | 74 | 74 | 74 |
| E | 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 |