Trek Fuel EX 8 Mountain Bike - Grey
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Product Information
Full details
The Trek Fuel EX 8 is a versatile trail bike designed for riders seeking confidence and capability on diverse terrain. Its key benefit lies in its balanced suspension, robust drivetrain, and powerful brakes, making it ready for aggressive descents and efficient climbs. A potential caveat for some users might be the specific fit, as it's crucial to select the correct size from the available options for optimal performance and comfort. This bike features an Alpha NEXT Platinum aluminum frame, Fox Performance suspension with 145mm rear and 150mm front travel, durable Bontrager Line alloy wheels, and a smooth-shifting SRAM Eagle 70 transmission, all complemented by 4-piston SRAM DB 8 hydraulic disc brakes.
All features
| Model Part Number | 5335742 |
|---|---|
| Brand | Trek |
Extended Product Information
FAQs
What size bike should I get?
Refer to the Trek Fuel EX sizing chart provided. Rider height is the primary factor. For example, riders between 165-176 cm typically fit a Medium (M) size.
Does the bike come with pedals?
No, the Trek Fuel EX 8 does not include pedals. You will need to purchase them separately to ride the bike.
What type of riding is this bike best suited for?
The Fuel EX 8 is designed for versatile trail riding, including flowy singletrack, technical descents, and moderate climbs. It's an excellent all-mountain bike.
Can I convert the wheels to tubeless?
Yes, the Bontrager Line TLR 30 wheels are Tubeless-Ready, and the Bontrager Brevard Pro XR tires are also Tubeless Ready. You will need tubeless rim tape, sealant, and valves.
What is the warranty on the Trek Fuel EX 8?
Trek typically offers a limited lifetime warranty on the frame to the original owner and a limited one-year warranty on components. Please refer to Trek's official warranty policy for complete details.
How much travel does the suspension have?
The bike features 150 mm of front travel from the Fox Rhythm 36 fork and 145 mm of rear travel from the Fox Performance Float X shock.
What is the gear range of the drivetrain?
The SRAM Eagle 70 12-speed drivetrain has a wide gear range with a 10-52 tooth cassette, offering excellent climbing ability and top-end speed.
Troubleshooting
Rear derailleur not shifting smoothly
Check the derailleur hanger alignment. Ensure the SRAM Eagle 70 T-Type chain is clean and lubricated. Verify the shifter cable and housing are free of damage.
Brakes feel spongy or weak
The hydraulic brake system may need bleeding. Check for leaks in the brake lines. Ensure brake pads and rotors are clean and free of contamination.
Suspension feels harsh or bottoms out easily
Adjust the air pressure in the Fox Rhythm 36 fork and Float X shock to match your weight and riding style. Ensure rebound and compression settings are correctly adjusted. Check for any obstructions or damage to the stanchions.
Dropper post is slow or not extending
Check the dropper post's cable tension and routing. Ensure the seatpost collar is not overtightened. Refer to the Bontrager Line Dropper manual for specific troubleshooting steps, which may include air pressure adjustments or service.
Tires are not holding air (tubeless setup)
Ensure the Bontrager Line TLR rims and Pro XR tires are properly seated. Check for leaks around the rim tape and valve stem. Add more sealant if the issue persists after re-seating the tires.
Pros and Cons
Pros
- Versatile geometry suitable for a wide range of trails.
- High-quality Fox Performance suspension provides excellent damping and control.
- Reliable and smooth SRAM Eagle 70 T-Type drivetrain.
- Powerful 4-piston hydraulic disc brakes for confident stopping.
- Durable aluminum frame with integrated storage for convenience.
Cons
- The default tire setup might be aggressive for riders who prioritize pure climbing speed.
- The included saddle may require personal preference adjustments.
- Does not include pedals, which will be an additional purchase.
- As with any advanced bike, proper setup and maintenance are crucial for optimal performance.
Setup, Compatibility & Care Instructions
Initial Setup:
- Pedals: Install pedals using an appropriate pedal wrench. Remember that the left pedal has a reverse thread.
- Saddle Height: Adjust the Bontrager Verse P3 saddle height to your preferred comfortable pedaling position. Use the dropper post lever for on-the-fly adjustments.
- Brake Bleed (if necessary): Ensure the SRAM DB 8 hydraulic disc brakes are functioning optimally. Refer to SRAM's documentation for bleeding procedures if needed.
- Tire Pressure: Set tire pressure based on rider weight, tire volume, and trail conditions. Tubeless setup is recommended for reduced rolling resistance and improved puncture protection.
Compatibility:
- Drivetrain: The bike is equipped with SRAM Eagle 70 T-Type components. Ensure any replacement parts are T-Type compatible.
- Wheels: Bontrager Line TLR 30 wheels are Boost148 compatible and Tubeless Ready.
- Headset: ZS headset standard.
- Bottom Bracket: BSA threaded 73mm.
- Axles: Boost110 front, Boost148 rear.
Care & Maintenance:
- Cleaning: Regularly clean the frame, drivetrain, and suspension components with water and mild soap. Avoid high-pressure washing, especially on bearings and suspension seals.
- Drivetrain Lubrication: Keep the SRAM Eagle 70 chain clean and lubricated with a suitable bike chain lubricant.
- Brake Maintenance: Periodically check brake pad wear and rotor condition. Ensure hydraulic lines are free of damage.
- Suspension Service: Follow Fox's recommended service intervals for the Rhythm 36 fork and Float X shock to maintain optimal performance.
- Bolt Checks: Regularly check and tighten all bolts, especially those on the handlebar, stem, and suspension linkages.