Is Trek Slash 8 Worth Buying? [Trek Slash 8 Review]

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Trek Slash 8

  • Price: $4299.99
  • Frame: Alpha Platinum Aluminum
  • Gear: 1×12
  • Tire: 29×2.5”

What we like about it: Progressive geometry and 29er tires that take you on fast and efficient track rides.

What we don’t like about it: Some people think it’s a little heavy.

Rating (4.7/5)

Trek Slash 8

What kind of routes would you choose a full-suspension bike for? On rugged forest climbs, on exciting bumpy descents, in enduro races, or even in general terrain. A full-suspension bike is a great companion for your cycling trips.

This Trek Slash 8 full-suspension enduro mountain bike features a sturdy alpha platinum aluminum frame, a wide SRAM GX Eagle 1×12 drivetrain, lightweight and durable Bontrager XR5 Team Issue tires, and the all-important RockShox Super Deluxe Select+ shock absorber. These made us pleasantly surprised about its descending performance in the Coronado National Forest.

During the 2-month review period, the bike led us through rolling forest trails, enjoyed beautiful mountain views of the Coronado National Forest, accompanied us as we conquered the forested climbs of the Coronado National Forest, and experienced relatively easy climbs on rugged routes.

I not only felt the excellent descending performance of this bike, which brought me an exciting experience but also experienced its powerful climbing ability.

Yes, this Trek Slash 8 left an unforgettable impression on me, whether it was the wonderful and consistent descents or the relatively easy climbs.

Below we analysis the descents, climbs, key features, components, and specs of the Trek Slash 8 as well as other versions. For more reviews on the bike, stay tuned with us.


In this one, we went to Coronado National Forest, which is far and wide and known as a mecca for cycling, and the route we chose to ride was a narrow single track. The trees on both sides of the road were tall and blocked my view. And the fallen leaves on the road may have also caused a hindrance to my riding. However, I am still very much looking forward to the performance of the Trek Slash 8.

It’s hard to believe that the Trek Slash 8 gives me great cornering traction in the corners with its lightweight and durable Bontrager XR5 Team Issue tires.

This was even though I encountered large boulders on the descent and had to make jumps. But when I hit the ground, the 170mm RockShox ZEB Select-based fork’s powerful and responsive rebound and stretch fully offset the impact from the ground, allowing me to descend more freely.

In addition, the Bontrager XR Trail Pro with its unique finned texture has a grip that not only adds support and control but allows for a more secure and comfortable grip for my hands.

Moreover, the comfortable Bontrager Arvada saddle achieves a more ergonomic design through the shell cutout. And the quality padding material is not only soft enough but also can provide the right support.

All in all, we couldn’t help but give it a thumbs up on the descent and were even more surprised by the thoughtful design of the components. I must say, Trek is a trustworthy bike brand.


We faced more turns as we made the climbs, and the road was slick with ruts and scattered gravel. But the excellent SRAM GX Eagle 1×12 drivetrain allowed me to smartly switch to the most energy-efficient gear ratio and get a more relaxed ride. In addition, the large 29×2.5” Bontrager XR5 Team Issue tires with their outstanding grip allowed me to ride more consistently upwards.

There may be a lot of concern that the lack of responsiveness in the face of an emergency may cause injury to the bike and rider. But in the actual climbing, Trek didn’t ignore this. Because the unique ABP setup has a more responsive response, giving me more confident control when I need it most.

In addition, the Knock Block 2.0 setup surprised me when I was traversing the variable climbing corners. Not only did it provide a better steering angle, but it kept the cables and hoses safe.

All in all, whether in descending or climbing, wouldn’t the Trek Slash 8’s performance still leave you with no reason to choose it?

Main Features


Trek Slash 8

When I saw this Trek Slash 8, the idea of going to an enduro race popped into my head.

First off, the Trek Slash 8’s high-quality, sturdy alpha platinum aluminum frame gives me full confidence in its ability to withstand impacts. However, the two paint colors are not bright enough for me. I wish there was a better color scheme.

Secondly, if you look closely enough, you will see that it has a full protective cover for the downtube (which can be replaced). It protects the bottom of your frame from rock impacts. This allows you to do highly focused technical course challenges without the distraction of a damaged downtube.

Next, we noticed its internal cable setup. This not only gives it a cleaner look but also prevents important cable control lines from being exposed to damage. And it will be easier and more convenient for your maintenance work.

Finally, the internal storage frame is set up so that you can use Bontrager BITS Internal Frame Storage Bag The Bontrager BITS Internal Frame Storage Bag allows you to use the necessary tools or essentials to make your ride easier. A water bottle holder is also available to bring essential hydration to your ride.

Yes, the careful and thoughtful design of the frame makes your ride convenient everywhere.


The steep seat tube angle (75.6°) of this Trek Slash 8 not only gives you easier pedaling, but also allows you to bend over to get an aerodynamic position when you want to gain more speed. This reduces the drag from the air to get acceleration.

Based on the relatively slack head tube angle of this bike (64.1°) provides greater speed stability and gives you more responsive handling. So you can make a big difference on the downhill.

In addition, the Trek Slash 8’s relatively short Fork Offset (43mm) improves the stability of the bike’s steering. One more thing, the standard reach (469mm) gives you the freedom to extend your arms. The important thing to note is that you need to choose the right size.

In addition, the relatively standard BB height (345mm) allows it to be in a suitable position whether you are climbing or descending. Thus, your center of gravity is in a suitable position.

Components and Specifications

SRAM GX Eagle 1×12 Drivetrain

Trek Slash 8

I have to say that the precise gear shifting amazes me. First of all, the wide range of speed options of 1×12 allows you to challenge more riding routes.

Secondly, the Smooth 1× shifting not only has a simpler operation, but it also uses the X-SYNC 2 technology. This allows the chain to be better controlled without worrying about dropping the chain.

In addition, SRAM’s Eagle 12-speed drivetrain has an extended gear range of 520% thanks to its dense gear range (10-52T). Even when you’re facing the steepest climbs, you can shift to the most appropriate gear ratio, allowing you to spin your tires more powerfully.

Not only that, but the open design helps you clear the mud when you’re going through muddy trails. It also provides crisp shifting performance and longer component life.

SRAM Code R 4-piston Hydraulic Disc Brake

Trek Slash 8

You know, the 2-piston hydraulic brake already has a good braking ability. So when I saw the SRAM Code R 4-piston hydraulic disc brakes on the Trek Slash 8, I had high expectations for its braking performance.

It did not disappoint my expectations on the actual ride. The powerful four-piston brake not only stops the tires steadily and precisely when faced with high speeds, but the SRAM CenterLine brake discs remain aligned with the center throughout the rotational work. This minimizes vibration and enables quiet braking.

In addition, the more advanced hydraulic disc brakes the braking power powerful for all to see. And a softer operating feel is also a major selling point to attract attention.

In short, consistent brakes in all situations provide additional assurance for your safe ride.

Bontrager XR5 Team Issue Tires

Trek Slash 8

Straight away, this XR5 Team Issue tire is a lightweight mountain bike tire, so it’s made with a durable yet lightweight construction. Even if you’re riding in rough conditions, it will give you enough traction for a fast ride.

In addition, the TM-Grip rubber compound material and 120tpi construction not only enhance its abrasion resistance and lighter weight but also allow you to make jumps more easily. Likewise, the unique tread pattern provides enough grip for a more stable passage when you face smooth surfaces.

It is also worth mentioning that the vacuum tires are ready to go so that your ride can be more versatile.

RockShox ZEB Select Fork

Whether in descents or on bumpy routes, the shock absorber works perfectly to always give you a better riding experience.

The bike’s RockShox ZEB Select fork has an additional 170mm of fork travel, which provides almost perfect damping on bumpy roads.

In addition, the DebonAir+ air spring not only has a relatively lighter weight, but the increased air volume at higher overall ride heights allows you to ride with more confidence on steep descents with more responsive cushioning.

In addition, the Maxima Plush Dynamic Suspension Lube reduces friction and therefore has a longer service life. And it can improve the damping effect during the ride.

RockShox Super Deluxe Select+ RT Shock

Trek Slash 8

Will you be looking forward to steeper climbs and bolder technical descents? I think this RockShox Super Deluxe Select+ RT Shock will give you the answer.

First of all, the RockShox Super Deluxe Select+ RT, which is designed with better materials, has better durability. It can maintain consistent shock absorption performance over a longer period.

Secondly, the new DebonAir+ air spring not only has a butter-soft feel, but it also works to the bottom when you’re dealing with small, raised piles of dirt. This greatly reduces the pressure of the ground on your bike, giving you a softer ride.

In short, whether it’s the RockShox ZEB Select Fork or the RockShox Super Deluxe Select+ RT Shock, they both have surprisingly good shock absorption. And with the Trek Slash 8 integrating them all, the Trek Slash 8 can take you on more technical routes.

Other versions of Trek Slash

In this review, we took a look at the Trek Slash 8’s alpha platinum aluminum frame, Bontrager XR5 Team Issue tires, SRAM GX Eagle 1×12 drivetrain, SRAM Code R 4-piston hydraulic disc brakes, and other components in action. For you to have a more comprehensive understanding, we have also found its other versions.

In all honesty, in the Trek Slash series, whether it’s the most expensive Trek Slash 9.9 XX1 Flight Attendant (priced at $12,749.99) or the most price-friendly Trek Slash 7 (priced at $3,474), a total of eight versions in the series, Trek all are made with a very meticulous attitude and have left a deep impression on us in the actual ride.

Of course, the higher price tag will be worth it for the riding experience. This Trek Slash 9.9 XX1 Flight Attendant is a strong but lightweight OCLV Mountain Carbon frame with a high-end SRAM XX1 AXS fully wireless drivetrain. So not only will you get a better riding experience, but the sharper shifts will get you more cheers for your performance on the track.

Not only that, but the excellent shock absorption settings and hydraulic disc brakes also allow you to experience the same riding experience as a professional speed bike on steep hills.

If, however, you are looking to invest. This Trek Slash 9.9 XX1 Flight Attendant may be an option you can’t pass up.

But the affordable Trek Slash 7 also has its advantages. The unique alpha platinum aluminum frame is not only relatively light but also has enough resistance to impact. In addition, the 170mm fork travel gives it excellent shock absorption. What’s more, the wide 1×12 drivetrain also allows you to go for more rides.

That’s right, whether high-end or affordable, Trek offers quality service and thoughtful design. You can choose according to your needs.

What we like about it?

  • The full suspension design can take you to adjust more adventure routes.
  • Alpha Platinum Aluminum frame, with relatively stronger impact resistance, can accompany you for longer rides.
  • Rugged and lightweight, Bontrager XR5 Team Issue Tires take you further afield.
  • SRAM Code R 4-piston hydraulic disc brakes provide stable and powerful braking in all conditions.
  • The SRAM GX Eagle 1×12 drivetrain not only has a wide enough selection of speeds, but the 1× shift makes your operation more convenient and simple.

What we don’t like about it?

  • The choice of paint color is not rich enough.
  • Some people think it has too few water bottle mounting brackets.


What is the frame material of the Trek Slash 8?

The frame material of Trek Slash 8 is Alpha Platinum Aluminum.

What is the tire size of the Trek Slash 8?

The tire size of Trek Slash 8 is 29×2.5”.

What sizes does the Trek Slash 8 come in?

Trek Slash 8 size chart.

SizeRider HeightInseam
S153 – 167 cm5’0″ – 5’6″72 – 79 cm28″ – 31″
M161 – 172 cm5’3″ – 5’8″76 – 81 cm30″ – 32″
M/L166 – 179 cm5’5″ – 5’10”77 – 84 cm30″ – 33″
L177 – 188 cm5’10” – 6’2″83 – 88 cm33″ – 35″
XL186 – 196 cm6’1″ – 6’5″87 – 92 cm34″ – 36″

Trek Slash 8 Specs


FrameAlpha Platinum Aluminum, internal storage, tapered head tube, Knock Block 2.0, Control Freak internal routing, downtube guard, shuttle guard, threaded BB, ISCG 05, 34.9mm seat tube, magnesium rocker link, Mino Link, ABP, Boost148, 160mm travel
ForkRockShox ZEB Select, DebonAir spring, Charger 2.1 RC damper, tapered steerer, 44mm offset, Boost110, Maxle Stealth, 170mm travel
ShockRockShox Super Deluxe Select+ RT, 230mm x 62.5mm
Max compatible fork travel180mm (596mm axle-to-crown)


ShifterSRAM GX Eagle, 12 speed
Rear derailleurSRAM GX Eagle
CrankSRAM X1 Eagle, DUB MTB Wide, 30T steel ring, 55mm chain line, 170mm length
Bottom bracketSRAM DUB MTB Wide, 73mm, BSA threaded
CassetteSRAM Eagle XG-1275, 10-52, 12 speed
ChainSRAM GX Eagle, 12 speed
Max chainring sizeMax: 34T, Min 28T


SaddleBontrager Arvada, hollow chromoly rails, 138mm width
*SeatpostSize: S
TranzX JD-YSP39, 100mm travel, internal routing, 34.9mm
Size: M, ML
TranzX JD-YSP39, 150mm travel, internal routing, 34.9mm
Size: L, XL
TranzX JD-YSP39, 170mm travel, internal routing, 34.9mm
HandlebarBontrager Line, alloy, 35mm, 27.5mm rise, 820mm width
GripsBontrager XR Trail Pro, alloy lock-on
StemBontrager Elite, 35mm, 0 degree, 35mm length
HeadsetKnock Block 2.0 Integrated, 72-degree radius (includes infinite-radius chip), sealed cartridge bearing, 1-1/8” top, 1.5” bottom
BrakeSRAM Code R 4-piston hydraulic disc
*Brake rotorSize: S, M, ML, L, XL
SRAM CenterLine, 6-bolt, round edge, 180mm
Size: S, M, ML, L, XL
SRAM CenterLine, 6-bolt, round edge, 200mm
Rotor sizeMax brake rotor sizes: front see fork manufacturer, rear 200mm


BagBontrager BITS Internal Frame Storage Bag


WeightM – 15.50 kg / 34.18 lbs
Weight limitThis bike has a maximum total weight limit (combined weight of bicycle, rider, and cargo) of 300 pounds (136 kg).


Comparison Table

BicyclesPriceDrivetrainTiresBrakesFront Fork TravelClick View
Marin Alpine Trail Carbon 2$44991×1229×2.5″Shimano SLX, 4-Piston hydraulic disc brake160mmClick View
Trek Slash 9.7$4999.991×1229×2.50”Shimano 4-piston hydraulic disc brake170mmClick View
Norco Sight A2 27.5$43991×1227.5 x 2.5″Shimano BR-MT520, 4 Piston hydraulic disc brake160mmClick View
Transition Patrol GX Code Alloy $52991×1229 × 2.4”(front)27.5×2.4”(rear)SRAM Code RSC Hydraulic Disc Brake160mmClick View

Trek Slash 8 vs Marin Alpine Trail Carbon 2

 Marin Alpine Trail Carbon 2

Because I am indeed a carbon lover. When I first saw the Marin Alpine Trail Carbon 2, I was attracted by its carbon frame. But after I rode it, its carbon frame didn’t make me feel much lighter. And the 160mm fork travel didn’t handle the bumpy roads as well as the Trek Slash 8 170mm RockShox ZEB Select fork.

However, in the drivetrain, the same 1×12 speed option gives them the same speed options. And the 1× design also makes them easier and quicker to shift gears.

However, if you’re more focused on trail riding on bumpy roads, the Trek Slash 8, which is about $200 cheaper, would be a good choice.

Trek Slash 8 vs Trek Slash 9.7

Trek Slash 9.7

The price difference makes them have different advantages even if they are both produced by Trek.

We can see that the Trek Slash 9.7, priced at $4,999.99, has a lighter and stronger OCLV carbon structure. In addition, the same wide 1×12 drivetrain also has an easier and faster speed change. However, in actual riding, the Trek Slash 8 will fit my riding habits better than the Trek Slash 9.7.

And the same travel of the shock-absorbing fork makes both bikes easy to get you through when facing bumpy roads. If you’re on a budget, the Trek Slash 8 will be a cost-effective choice for you. If you want a higher-end carbon frame, the Trek Slash 9.7 would also be a good choice.

Learn More: 1500 Miles Off-Road In Real-World Testing-Trek Top Fuel 9.7 Review

Trek Slash 8 vs Norco Sight A2 27.5

Norco Sight A2 27.5

The bright red paint allows the Norco Sight A2 27.5 to attract more attention. But I’m concerned about its 27.5er tire size, which makes me a bit worried about its rolling speed. And with 160mm of travel, the fork is shorter compared to the Trek Slash 8. However, it does have a 29er version set up, so if you want a larger tire size tire you can try it.

Of course, the Trek Slash 8 from the big brand Trek not only has a 29er tire diameter but also a 1×12 drivetrain to make your speed change easier. And the comfortable saddle and sturdy cranks will also make you want to stop riding. One more thing, the 170mm travel fork, which is more focused on damping rough roads, can take you on exciting descents.

If, however, you like exciting and bumpy routes, why don’t you try the reliable Trek Slash 8?

Learn more : Is Norco Sight VLT C1 Splendid? – [Norco Sight VLT C1 Review]

Trek Slash 8 VS Transition Patrol GX Code Alloy

Transition Patrol GX Code Alloy

In all honesty, the $5299 Transition Patrol GX Code Alloy is the high-end version of this Transition Patrol.

Although the high-end version of the Transition Patrol GX Code Alloy is designed with a combination of tires of different sizes. And this combination of tires will allow you to handle a wider variety of routes. But it may not be the flexible hybrid wheelset that some people are looking for. However, the Transition Patrol GX Code Alloy also has great braking performance with its SRAM Code RSC hydraulic disc brakes.

However, we can see that the two bikes have the same body weight. And the Trek Slash 8 is the same SRAM Code hydraulic disc brake as the Transition Patrol, GX Code Alloy. In actual riding, I think the four-piston braking performance is better on the Trek Slash 8.

In addition, the same wide 1×12 drivetrain and the same quick and easy 1× shifting made no difference to me while riding.

Therefore, I think about $1000 for a cheap Trek Slash 8 would be a more affordable option. Not to mention Trek is a big brand that you can trust.

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