Trek Top Fuel 8 Gen 4
Special Price
$3,499.99
Regular Price:
$3,999.99
In stock
Only %1 left
SKU
5319315
Size Guide
Not sure what size to get? Let us help you find the perfect fit. We think you’ll find
this guide helpful, but if you still have questions send us an email at
[email protected] or call us at 1-800-123-1234. Your comfort is
our promise.
Not sure what size to get? We think you’ll find this guide helpful, but if you
still have questions send us an email at [email protected] or call us at
1-123-123-1234.
- Women
- Men
- Teen
- Kids
- Footwear
- Dog Pajamas

| Women | ||||||
| Chest | Waist | Hip | ||||
|---|---|---|---|---|---|---|
| XS 0-2 |
32-34 | 26-28 | 35-37 | |||
| S 4-6 |
34-36 | 28-30 | 37-39 | |||
| M 8-10 |
36-38 | 30-32 | 39-41 | |||
| L 12-14 |
39-42 | 33-35 | 42-44 | |||
| XL 16-18 |
43-45 | 36-38 | 44-46 | |||
| XXL 18-20 |
46-48 | 39-41 | 47-49 | |||
| How to Measure
Chest: Measure around the fullest part of chest, keeping the measuring tape up under arms and around shoulder blades. Waist: Measure around waist (not over pants) at the natural waistline. Hip: Measure around the fullest part of hips while standing straight with heels together. *Size chart is a general guide. It may include sizes that are unavailable for this item. All measurements are in inches unless otherwise noted. |
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| Men | ||||||
| Chest | Waist | Neck | ||||
|---|---|---|---|---|---|---|
| S 36/38 |
36-38 | 28-30 | 14-14.5 | |||
| M 38/40 |
38-40 | 32-34 | 15-15.5 | |||
| L 40/42 |
42-44 | 36-38 | 16-16.5 | |||
| XL 46/48 |
46-48 | 40-42 | 17-17.5 | |||
| XXL 50/52 |
50-52 | 44-46 | 18-18.5 | |||
| How to Measure
Chest: Measure around the fullest part of chest, keeping the measuring tape up under arms and around shoulder blades. Waist: Measure around waist (not over pants) at the natural waistline. Neck: Measure around the neck allowing the measuring tape to lay on the neck base comfortably. *Size chart is a general guide. It may include sizes that are unavailable for this item. All measurements are in inches unless otherwise noted. |
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| Teen | ||||||
| Chest | Waist | Hip | Height | |||
|---|---|---|---|---|---|---|
| XS 7/8 |
26-28 | 22-24 | 27-29 | 52-54 | ||
| S 9/10 |
28-30 | 24-25 | 29-30 | 55-56 | ||
| M 11/12 |
30-31 | 25-26 | 30-32 | 57-59 | ||
| L 13/14 |
31-32 | 26-28 | 32-34 | 60-62 | ||
| XL 15/16 |
32-33 | 28-30 | 34-36 | 62-63 | ||
| How to Measure
Chest: Measure around the fullest part of chest, keeping the measuring tape up under arms and around shoulder blades. Waist: Measure around waist (not over pants) at the natural waistline. Hip: Measure around the fullest part of hips while standing straight with heels together. Height: Measure from the top of the head and pull the tape straight down to the floor. Stand straight with both feet together (bare feet only). *Size chart is a general guide. It may include sizes that are unavailable for this item. All measurements are in inches unless otherwise noted. |
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| Kids | |||||||||||
| Chest | Waist | Hip | Inseam | Height | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2T | 20-20.5 | 20-20.5 | 20-21 | 14-15 | 33-35 | ||||||
| 3T | 20.5-21 | 20.5-21 | 21-22 | 15-16 | 35-38 | ||||||
| 4T | 21-22 | 21.5-22 | 22-23 | 16-17 | 38-41 | ||||||
| 5/6 | 22-24 | 22-23 | 23-25 | 17-20 | 41-49 | ||||||
| 7/8 | 24-26 | 23-25 | 25-28.5 | 20-24 | 49-55 | ||||||
| 10/12 | 26-30 | 25-27 | 28.5-32 | 24-28 | 55-60 | ||||||
| 14/16 | 30-33 | 27-30 | 32-36 | 28-30 | 60-63 | ||||||
| How to Measure
Chest: Measure around the fullest part of chest, keeping the measuring tape up under arms and around shoulder blades. Waist: Measure around waist (not over pants) at the natural waistline. Hip: Measure around the fullest part of hips while standing straight with heels together. Height: Measure from the top of the head and pull the tape straight down to the floor. Stand straight with both feet together (bare feet only). *Size chart is a general guide. It may include sizes that are unavailable for this item. All measurements are in inches unless otherwise noted. |
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Swipe for more →
| Footwear | ||||||
| Women's | XS 5.5-6 |
S 7-8 |
M 9-10 |
L 10.5-11 |
XL 12-12.5 |
- |
|---|---|---|---|---|---|---|
| Men's | XS 4.5-5 |
S 6-7 |
M 8-9 |
L 9.5-10 |
XL 11-11.5 |
XXL 12.0-12.5 |
Swipe for more →

| Dog Pajamas | ||||||
| XS 8-12 |
Fits Toy Poodle, Chihuahua, Yorkshire Terrier | |||||
|---|---|---|---|---|---|---|
| S 12-16 |
Fits Jack Russell Terrier, Pug | |||||
| M 16-20 |
Fits Beagle, Dachsund | |||||
| L 20-24 |
Fits Schnauzer, Cocker Spaniel | |||||
| XL 24-28 |
Fits Pit Bull, Labrador and Golden Retrievers, German Shepherd | |||||
| How to Measure
Length: Measure your pet from the base of its neck to the base of its tail. Bump up a size if your pet has a thick coat, broad chest, or broad underside. *Size chart is a general guide. It may include sizes that are unavailable for this item. All measurements are in inches unless otherwise noted. |
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Top Fuel 8 Gen 4 is a nimble alloy trail bike that strikes a balance between quick climbing efficiency and descending confidence. It packs in a versatile 130mm front and 120mm rear travel for ripping over rocks and roots without sacrificing power on ascents. It's built from lightweight Alpha Platinum Aluminum that helps save your budget for bike trips, but packs in upgrades where they matter, like a 12-speed Shimano XT and SLX drivetrain, and a Fox Rhythm 34 fork.
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