Take Trek’s lightweight Fuel+ trail frame, push the travel to its maximum and bolt in bigger suspension. That’s the Fuel+ LX, and the Trek Fuel+ LX 9.8 XT Gen 2 is the build that shows the idea most clearly, with a Fox 38 fork and a coil shock. I haven’t ridden it. This page covers the two LX builds Trek has published full specs for, the 9.8 XT and the 9.8 Eagle 90, and I’ll compare them with the Slash+, the Rail+ 8 and the Aventon Ramblas I filmed. Everything here comes from Trek’s product pages, checked on Oct 28, 2026 and linked at the bottom.
The long-travel Fuel+
Trek sells the Fuel+ Gen 2 frame in three setups. EX is the do-it-all trail bike, MX mixes wheel sizes, and LX is the one Trek says will “charge through it all.” The LX gets 160mm of rear travel and a 170mm fork, the most of the three, and it runs 29 in wheels front and rear in every size, including S.
The frame is the same OCLV Mountain Carbon across the family. Trek’s parts list describes its travel as adaptable from 145 to 160mm, using an interchangeable alloy rocker link and an interchangeable lower shock mount. A flip chip in the lower shock mount makes the leverage rate more progressive, which Trek says adds bottom-out resistance without losing small-bump feel. The LX sits at the long end of that range.
Motor and battery
Both builds use TQ’s HPR60 mid drive: 60 Nm, 250W continuous and 350W peak. Trek says it kicks in at a lower cadence than the motor it replaces. It’s a Class 1 bike with assist to 20 mph and no throttle listed. The TQ color display mounts on the handlebar and connects over Bluetooth and ANT+.
The battery is a removable TQ 580Wh, charged with a 4A TQ charger. Trek doesn’t give a range in miles, but it says the frame has room for a range extender.
Two builds
LX 9.8 XT, $8,499.99. Fox Factory 38 fork with 170mm and a GRIP X2 damper, and a Fox DHX2 coil shock (205 x 65mm). Trek lists the spring rate by size: 250 lb in S, 350 in M, 400 in L, 450 in XL and 500 in XXL. Drivetrain is Shimano XT mechanical 12 speed with a 10 to 51 cassette, and the brakes are Shimano XT M8220 4-piston on 200mm rotors.
LX 9.8 Eagle 90, $8,699.99. RockShox ZEB Ultimate fork with 170mm and a RockShox Vivid Ultimate shock (205 x 65mm). Drivetrain is SRAM’s Eagle 90 T-Type 12 speed with a 10 to 52 cassette, and the brakes are SRAM Maven Bronze 4-piston on 200mm rotors.
Both get Bontrager Line Comp 30 alloy wheels, Maxxis Assegai (front) and Minion DHR II (rear) 29 x 2.5 in tires, a 780mm Race Face Turbine bar and a Bontrager Line Dropper (150mm in S, 170mm in M, 200mm in L to XXL). Sizes run S to XXL. Both were build to order on Oct 28, 2026, and neither was on sale. Trek doesn’t list a weight for either one.
Trek also lists an LX 9.8 XT Di2 ($8,999.99) and an LX 9.9 X0 AXS ($10,199.99), but it hadn’t published full specs for those on Oct 28, 2026, so I’ve left them out.
A note on Trek’s descriptions
Trek’s summary paragraph for the Eagle 90 build says it has a Fox Factory suspension package with a coil shock. Its spec list and parts list say RockShox ZEB Ultimate and Vivid Ultimate. I’ve gone with the spec list, but confirm with your Trek store before you order. If a coil shock matters to you, the 9.8 XT is the build Trek lists with one.
Frame details
Both builds share the downtube and shuttle guards, internal routing, a ZS headset that accepts angle-adjust cups, Trek’s Active Braking Pivot and a UDH derailleur hanger standard. Max fork travel is 170mm, so the LX ships at the frame’s limit. Max rotor size is 203mm, max tire size is 29 x 2.50 in, and the total weight limit is 300 lb, including the bike.
How it compares
Against the Trek Slash+, which I haven’t ridden either: also an HPR60 bike with a 580Wh battery, but with 170mm of rear travel and mixed wheels. The Slash+ 9.7 is $7,999.99 at 47.58 lb, so it costs $500 less than the LX 9.8 XT and has a published weight. The LX keeps 29 in wheels at both ends and adds the coil shock on the XT build.
Against the Fuel+ EX Gen 2: same frame and motor with 145mm rear and 150mm front. The EX 9.7 is $5,999.99 at 45.6 lb and was in stock.
Against the Trek Rail+ 8 Gen 5: Bosch CX at 85 Nm, 800Wh, 160mm of travel and 54.42 lb for $5,999.99. It’s $2,500 less with far more power and battery, but heavier. The Rail+ 5 Gen 5 is $4,999.99.
Against the Aventon Ramblas, which I filmed: a coil-fork hardtail with a 100 Nm motor and 708Wh battery at about 54 lb in its current ADV version. It’s a different kind of bike. The LX is full suspension with far more travel and less torque.
FAQ
Have I ridden the Fuel+ LX Gen 2?
No. This page is based on Trek’s product pages, checked Oct 28, 2026.
Does the Fuel+ LX have a coil shock?
The 9.8 XT does, a Fox DHX2. The 9.8 Eagle 90 is listed with a RockShox Vivid Ultimate in its specs, even though Trek’s summary text mentions a coil shock.
How heavy is it?
Trek doesn’t list a weight for either LX build. The EX 9.7 on the same frame is 45.6 lb in size M.
How is the LX different from the Slash+?
Both use the HPR60 and 580Wh battery. The Slash+ has 170mm of rear travel and mixed wheels; the LX has 160mm of rear travel and 29 in wheels at both ends.
Can I buy one today?
Both published LX builds were build to order on Oct 28, 2026.
Pros and cons (from the specs and sources)
Pros: most travel of any Fuel+ (160mm rear, 170mm fork); coil shock with size-specific springs on the 9.8 XT; 29 in wheels at both ends in every size; removable 580Wh battery with room for a range extender; 4-piston brakes with 200mm rotors; sizes up to XXL.
Cons: no published weight; no range figure; 60 Nm is a light assist at this price; Trek’s text and specs disagree on the Eagle 90 build’s suspension; both builds were build to order; the Slash+ 9.7 costs less.
Who it’s for
On paper, the Fuel+ LX fits riders who spend most of their time on rough, steep descents and want long travel on a lighter-assist e-MTB with full-size wheels. If you prefer a coil shock, the 9.8 XT is the build to look at. Riders who want a published weight and a lower price should check the Slash+ 9.7 or the EX 9.7 first.
Price
As of Oct 28, 2026 on trekbikes.com: the Fuel+ LX 9.8 XT Gen 2 was $8,499.99 and the Fuel+ LX 9.8 Eagle 90 Gen 2 $8,699.99. Neither was on sale.
“He drew me up from the pit of destruction, out of the miry bog, and set my feet upon a rock, making my steps secure.” Psalm 40:2 (ESV)
