Released May 18

The World's Favorite Trek Gets an Update



Price Range



26″ / 27.5″ / 29″, 27.5″ / 29″


Hardtail / 100mm front

Frame Material


Trek’s best-selling mountain bike gets even better with all-new features that take entry-level off the ground floor. The all-new Marlin looks and feels more trail ready than ever, so riders can take on more without breaking their bike budget.

Photo Credit: Trek

The highs and lows of this model family

Compare the Marlin Range
Spec Level
Weight32.6 lbs32.2 lbs31.5 lbs
ForkSuntour XCTRockShox JudyRockShox Judy
Wheel Size26″ / 27.5″ / 29″27.5″ / 29″26″ / 27.5″ / 29″
GroupsetDeoreDeore, FSASX Eagle
Drivetrain1 × 101 × 101 × 12
Travel100mm front100mm front80mm front
Where to Buy

At Trek


At Trek


At Trek

Estimated Spec Level

Based on build material and quality level of the frame, fork, wheelset, groupset, suspension system, and more. Learn more →

Spec level →$0$200$400$600$800$1,000$1,200
6 Gen 3
7 Gen 3
8 Gen 3
Stack/Reach Ratio1.481.441.371.381.351.311.281.25
Top Tube Length526556584620636652683712
Seat Tube Length320340370420435450500540
Seat Tube Angle74.
Head Tube Length9090100105110115135150
Head Tube Angle66.566.566.566.566.566.566.566.5
BB Drop3845456060606060
BB Height302313313308308308308308
Front Center630663692732749765798829
Chainstay Length438438438443443443443443
Standover Height655663697752764776796821

🐐 Measurements listed in millimeters and degrees

Trek Upgrades Its Most Popular Bike: The Marlin

May 25, 2023

Riders can expect updated geometry, a new frame, increased tire clearance and a rear axle system that "enhances stability," Trek said.

Read Review

From Trek

Trek just launched the latest iteration of its best-selling mountain bike, Marlin. In its fresh form, Marlin boasts an entirely new frame that elevates stability for riders honing their skills with all-new geometry and fresh features that inspire confidence and capability wherever it rolls. 

Marlin features a new Alpha Silver Aluminum frame that gets modern trail bike updates, like a slacker head tube, longer reach, and wider bars to elevate confidence when tackling more difficult terrain. The frame is paired with a 100mm fork to soak up roots and rocks, and can even be upgraded to a 120mm fork on sizes XS and up as riders progress and want more from their ride. The new frame also increases tire clearance, so riders will be able to roll with beefier 2.4˝ tires that boost grip and soak up rough trails.

Securing the rear wheel is a new Thru Skew rear axle that ups wheel security. It secures into a closed dropout system for a safer, simpler, and stronger ride while retaining the existing 135mm rear hub standard. Plus, riders can stash the Thru-Skew’s removable lever for added wheel security and a cleaner look while riding.

All new Marlins feature updated internal cable routing for a cleaner overall look and added internally-routed dropper post compatibility. Internal foam tubes simplify cable routing and prevent cables from rattling on rough rides. To increase protection on the outside of the frame, Trek equips new Marlin with a full-coverage chainstay guard that quiets chain slap, shields from scratches and knocks, and gives the bike a trail-savvy look.

Trek continues expanding Marlin with an additional XXS size this year, offering a fit for shorter riders and growing kids. All bikes, size XXS through XXL, feature Trek’s Smart Wheel Sizing and thoughtful details to increase riding comfort. Smaller sized frames will feature a curved top tube to improve stand over height, and roll with wheels as small as 26˝, with wheel size increasing proportionally along with frame size.

For price-conscious riders, Marlin will still be available in its previous generation on Marlin 4 and 5, while Marlin 6, 7, and 8 will feature the all-new frame and latest technology.