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2024 Polygon

Xtrada 20

A 20″ aluminum frame mountain youth bike with mid-range components and tektro hydraulic disc brakes.
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Manufacturer Price

$699$799
Weight28.4 lbs  
FrameAluminum
SuspensionHardtail, 80mm
ForkSuntour XCM
Wheels20″ Aluminum
Drivetrain1 × 9
GroupsetmicroSHIFT Advent
BrakesTektro Hydraulic Disc
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Insights
Ride Feel

Based on frame geometry and build specs.

Handling
nimblestable
Xtrada 20
Other Mountain Youth bikes
Gearing

A bike with lower gearing will be easier to ride up steep hills, while a higher top end means it will pedal faster down hills.

Lowest gear

(climbing)

17 mph

Xtrada 20

Highest gear

(descending)

Spec Level

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

Price History
Reviews
MBR
Polygon Xtrada 5 review - MBR

Aug 2023 · Alan Muldoon

Xtrada literally translates to crossroads. And that can be interpreted a couple of different ways. Did Polygon intend the Xtrada 5 to meet at the intersection between on and off road riding? Or did it simply take the wrong road when speccing the 2×10 drivetrain?  We’re convinced it’s the latter. Because if you ignore the front derailleur for a second and take a closer look at the frame design, it’s clear that the Xtrada 5 has the most modern layout in class.  Best hardtail mountain bikes: reviewed and rated by experts Not only does this 29er have the slackest steering geometry for stability at speed, but it also has the lowest top tube and shortest seat tube. So if your feet do get blown off the pedals, you have a way better chance of riding home with your private parts intact.  Shift your focus to the rear of the bike and you’ll instantly notice a big disparity in size between the chainstays and the seatstays. The chunky chainstays provide direct power transfer from the pedals to the rear wheel, while the slender seat stays deliver a modicum of comfort from bumps transmitted from the rear wheel. Comfort that’s enhanced further by the slender 27.2in seat post when sat down pedalling.  The frame also has internal routing for a dropper post, and given the increased availability of affordable 27.2in droppers, it doesn’t spell the death knell it once did for a trail bike.  Best mountain bikes under £1000: brilliant bargain bikes Suspension Up front, the Xtrada 5 gets a 120mm travel Suntour XCM-HLO Coil fork, which is identical to the fork on the Jamis. It’s friction damped but it’s still pretty sensitive so it does a good job of eliminating a lot of the trail chatter before it gets transmitted to your hands. The fork gets a tapered steerer tube to bolster steering precision but the lower legs are an open dropout design so use a traditional quick release skewer rather than a stiffer bolt-thru axle. Flick the lock out lever on fork for a stint of blacktop and the mechanical top-out clunk when you hit a bump serves as a poignant reminder to open up the fork again as soon as you get off road.  Components The Entity 760mm bar and stubby 45mm stem enhanced the control and blend perfectly with the frame dimensions, even if the stem is somewhat at odds with the more XC focused 2×10 drivetrain.  Now, having two chainrings up front definitely gives the Xtrada 5 the widest gear range in test. Just don’t take that as a plus point, though, unless of course you plan on using the Polygon exclusively for commuting duties. Get the Xtrada off road and on trails that aren’t billiard table smooth, you are guaranteed to find the chain dangling off the chainset at the bottom of every descent. It’s mega frustrating, and not something we usually have to deal with as all modern mountain bikes have 1x drivetrains. It should …Continue reading »

Highs
  • Top quality frame with great proportions and sizing. Refined ride quality. Keen pricing

Lows
  • 2x10 drivetrain. Tektro brakes aren't the most powerful

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Geometry
Specs
Build
Frame

ALX Junior 20” Aluminium Frame, Quick Release 10x135mm, Threaded 68mm BB

BB StandardBSA, 68mm, Threaded

Fork

Suntour XCM JR, Preload Adjuster, 80mm Travel, QRx100mm

Travel80mm

Spring TypeCoil

Bottom Bracket

BSA, 68mm, threaded

Stem

Entity Alloy, 45mm length, 31.8mm clamp

Handlebar

Polygon Steel, 31.8mm Clamp, 580mm wide, 20mm Rise

Saddle

Entity Black Sadle

Seatpost

Entity 27.2x250mm

TypeRigid

Pedals

Included

Groupset
Rear Derailleur

MicroShift ADVENT RD-M6195, 9-Speed

Crank

ProWheel C10Y, 32T, 127mm

Shifters

MicroShift SL-M6195R, 9-Speed Shifter

Cassette

MicroShift CS-H093, 11-38T

Chain

KMC X9, 9-Speed

Brakes

Front: Tektro HD-J285, Hydraulic Disc, 160mm Rotor, Rear: Tektro HD-J285, Hydraulic Disc, 160mm Rotor

TypeTektro Hydraulic Disc

Wheels
Rims

Front: Polygon, Alloy double wall, 20”, Formula DC-20 Hub, 6 Bolt, Quick Release, Rear: Polygon, Alloy double wall, 20”, Formula DC-1422 Hub, 6 Bolt, Quick Release

Tires

VeetireCo. Crown Gem, 20x2.25”

Rider Notes
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First added October 30

Last updated May 30