Compare/Trek Session vs Slash

Head to headMountain

Session

Slash

Trek

Starting price

Session—

Slash$4,400

Claimed weight

Session—

Slash16.53 kg (36.4 lb)

Tire clearance

Session—

Slash63.5 mm

Builds available

Session0

Slash7

01 / Overview

Overview

03 / Specifications

Where the builds differ.

Comparing our editor's-pick builds side-by-side. Winners highlighted row-by-row — lower price and weight, and the better-spec component, each mark a point.

01Frameset

Session

Slash

9.9 X0 AXS T-Type Gen 6 · $8,700

Claimed weight

—

16.53 kg (36.4 lb)

Frame material

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OCLV Mountain Carbon, high main pivot, idler pulley, internal storage, angle-adjust headset, adjustable leverage rate, integrated frame protection, internal routing, alloy rocker link, ISCG 05, Active Braking Pivot, UDH, 148x12mm thru axle, 170mm travel

Fork

—

RockShox ZEB Ultimate, DebonAir spring, Charger 3.1 RC2 damper, tapered steerer, 44mm offset, Boost110, Maxle Stealth, 170mm travel

Tire clearance

—

63.5 mm

02Groupset

Shift levers

—

SRAM AXS Pod

Rear derailleur

—

SRAM X0 Eagle AXS, T-Type

Cassette

—

SRAM Eagle XS-1295, T-Type, 10-52, 12-speed

Crankset

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SRAM X0 Eagle, T-Type, DUB, 30T ring, 55mm chainline, 165mm length

Brakes

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SRAM Maven Silver 4-piston hydraulic disc

03Wheelset

Front wheel

—

Bontrager Line Pro 30, OCLV Mountain Carbon, Tubeless Ready, 6-bolt, Boost110, 15mm thru axle (Size S: 27.5in; Sizes M/ML/L/XL: 29in)

Rear wheel

—

Bontrager Line Pro 30, OCLV Mountain Carbon, Tubeless Ready, Rapid Drive 108, 6-bolt, SRAM XD driver, Boost148, 12mm thru axle, 27.5in

Front tire

—

Bontrager (TR) RSL SE, Tubeless Ready, triple compound, 60tpi (Size S: Brevard 27.5x2.5; Sizes M/ML/L/XL: Galbraith 29x2.5)

04Cockpit

Handlebar / stem

—

Bontrager Line Pro, OCLV Carbon, 35mm clamp, 27.5mm rise, 820mm width

Saddle

—

Verse Short Elite, hollow magnesium rails, 145mm width

Seatpost

—

RockShox Reverb AXS (wireless, 34.9mm): Size S 150mm travel (442mm length); Size M/ML 175mm travel (492mm length); Size L/XL 200mm travel (542mm length)

03.1

Build variants & pricing

Session · 0 builds

Slash · 7 builds$4,400 – $8,700

9.9 X0 AXS T-Type Gen 6

SRAM X0 Eagle AXS · Bontrager Line Pro 30

$8,700

9.8 GX AXS T-Type Gen 6

SRAM GX Eagle AXS · Bontrager Line Comp 30

$7,700

9.8 XT Gen 6

$7,150

SE Gen 5

SRAM GX Eagle AXS · Bontrager Line Comp 30

$7,150

9.8 XT Di2 Gen 6

Shimano XT M8250 · Bontrager Line Comp 30

$6,700

9 GX AXS T-Type Gen 6

$5,800

8 Gen 6

Shimano XT M8100 · Bontrager Line Comp 30

$4,400

04 / Geometry

How they fit, how they steer.

Reach × Stack · size —mm

Where the handlebar sits relative to the bottom bracket — the single most important fit pair.

Session

Slash

size —

Reach—

——

Stack—

——

Head tube angle—

——

Trail—

——

Chainstay length—

——

Wheelbase—

——

Top tube (effective)—

——

04.1

Which size should I buy?

Your height

5'8"173 cm

5'0"5'5"5'10"6'3"6'7"

Session

—

Fits riders in this height range.

Slash

5'6" – 5'8"

Fits riders in this height range.

→These are starting points. Flexibility, riding style, and preferred position all shift the answer — if you’re between sizes, a professional fit beats a chart.

05 / Reviews