Hellion X20

Name: Hellion X20
Brand: Early Rider US
SKU: HX20
Price: 2099.0 USD
Availability: InStock

$2,099.00

18 total reviews

SIZE OF LEG

21in

AGE

6-8years

WEIGHT

22.50lb

Description

A 20” full suspension trail bike that’s happy on dirt jumps, single track and the junior circuit. Built for 6-8 year olds with a spec coveted by much, much bigger kids. The Hellion X20 doesn’t need to go this hard.

Color: Raw

Raw
Moonstone

Product variants

Ready to ship July 29, 2025

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Specs & Geometry Hellion x20 Support

Accessories for this bike

Adventure made easier.

Meet the Hellion X20

The Hellion X20 is a full-suspension MTB with a triple-butted mono-link aluminium frame and CNC'd chainstay yoke optimised for strength without unnecessary weight. The 95mm DNM rear shock pairs nicely with 100mm up front thanks to the fully adjustable RST Spex forks to smooth out the worst of the trail. Its long, low, and slack geometry ensures confidence, speed, and agility, while a narrow-wide chainring, forged cranks, and SRAM GX 1x10 drivetrain boost pedalling efficiency and chain safety. Shimano Deore MT500 brakes and tubeless-ready wheels with 2.25" Crown Rubber Vee Gem tyres deliver reliable stopping and rugged performance.

Closer look

The full story

A race optimised full suspension aluminium frame

Built for performance, the Hellion X20 features a triple-butted dual suspension mono link frameset with a CNC'd chainstay yoke precision engineered to take big hits like a pro.

The 95mm DNM rear shock pairs brilliantly with the 100mm up front to deliver exceptional trail feedback, smoothing out roots, rocks and drops. The frame tubing has been deliberately crafted to balance strength (at the pressure points) with lightness, ensuring we don’t waste valuable grams and they don’t lose valuable seconds.

Threaded thru axles ramp up frame stiffness while sliding dropouts give them handling and size adjustments as they progress. To top it off, we added a cable guide for an external dropper because progression is everything.

Long, low and slack

That’s the assignment and we understood it.

The Hellion X20 is built for performance with a geometry optimised for speed, technical acumen and confidence on the gnarly bits.

The low centre of gravity keeps them balanced in the berms while the slack head tube angle takes (some of the drama) out of descending. The short seat stays give the bike a playful responsive feel (while also making manuals just a little easier to master).

A no fuss, full gas chainset

The crankset and single ring set-up give the Hellion X20 a powerful mix of performance, safety and pedalling efficiency that you just won’t see on other bikes this size.

The narrow wide chain ring stops the chain from flapping while working in harmony with the forged aluminium direct mount cranks for maximum power transfer when it matters.

Anatomically designed cockpit

The Ritchey Jr cockpit is anatomically designed for progression and control. When everything fits right, steering becomes more precise, more controlled. The lock on grips prevent hand slip in the inevitable wet muddy conditions.

The X20 also comes spec’d SDG fly junior saddle and SDG Slater pedals which not only offer stability and performance on tougher trails, but also look seriously cool.

Big kid forks, little kid bike

The Hellion X20 comes equipped with 100mm of smash proof front suspension courtesy of RST Spex. Featuring the same levels of adjustability typically found on much bigger kids’ bikes, the Hellion X20 can withstand pretty much anything little rippers decide to throw at it.

Fine tune the float with adjustable air suspension, compression and rebound to dial in their ride according to the demands of their skill set, terrain or current weight.

Lightweight, adjustable brakes

Featuring a lightweight, smooth modulation, plenty of adjustability and ultra reliable braking, it’s no wonder we’re such big fans of Shimano’s Deore MT500s.

Braking feedback is predictable with a smooth modulation that prevents unnecessary emergency stops while the 160mm 6 bolt rotors give bold riders the confidence they need to go hard, and stop harder.

A SRAM GX drivetrain

The SRAM GX 1x10 is a robust, efficient, and versatile drivetrain that balances simplicity with performance. The low-maintenance setup which saves valuable weight without sacrificing performance. With its smooth, accurate shifting, superior weight and robust build, there’s a reason why SRAM GX is the drivetrain of choice for so many pros.

MTB wheels that go hard

Fully sealed bearing hubs, tubeless compatible, double wall rims and optimised spoke count means these wheels rip.

Because there’s no point speccing a great bike with weak wheels.

Sealed bearings keep mud, water and corrosion at bay while double wall rims give you twice the confidence on rocks and roots.

The optimised spoke count means you won’t have to worry about buckled wheels while thru axles makes the rare times you do need to swap tyres a breeze.

Want to get with the program?

Early Rider Adventure Ambassadors

Adventure starts here. The Early Rider Adventure Ambassador crew is for young riders who live to explore, push their limits, and inspire others along the way. As an ambassador, they’ll get exclusive benefits, and a chance to represent Early Rider. Ready to ride?

Learn More

Specs and Geometry

Specification

STANDOVER HEIGHT	53CM
FRAME	BUTTED ALLOY FRAME, 95MM TRAVEL
REAR SHOCK	DNM AO-38RC, 152X25.4MM REBOUND ADJUST, PEDAL PLATFORM
FORK	RST SPEX 100MM TRAVEL, 15MM BOLT THRU AXLE
STEERER	TUBE AL6061
CRANKS	SAMOX 127MM DIRECT MOUNT
PEDALS	SDG SLATER 90 PEDALS, BLACK
BOTTOM BRACKET	SAMOX EXTERNAL CUP, THREADED, SEALED CARTRIDGE BEARING
RIMS	20 X 28H DOUBLE WALLED AL6061, PINNED, TUBELESS COMPATIBLE
REAR HUB	CNC'D STRAIGHT PULL AL6061, 12x142 THRU AXLE
FRONT HUB	CNC'D STRAIGHT PULL AL6061, 15x100MM THRU AXLE
AXLES	THRU AXLES AL7075, 15MM FRONT, 12X142MM REAR (1.0P)
CHAIN	KMC X10
CHAINRING	SAMOX OFFSET NARROW WIDE, STEEL, 30T
WEIGHT	10.15KGS W/O PEDALS
SHIFTER	SRAM GX TRIGGER RH 10SPD
REAR CASSETTE	SRAM PG1020 11-36T, 10SPD
BRAKES	SHIMANO DEORE BR-MT500, 160MM RT66 ROTORS
LEVERS	SHIMANO DEORE BL-MT501
FRONT TYRE	VEE CROWN GEM SKINWALL 20x2.25", 72TPI FOLDING, TR
REAR TYRE	VEE CROWN GEM SKINWALL 20x2.25", 72TPI FOLDING, TR
HEADSET	ER CONVENTIONAL HEADSET, 1 1/8" CARTRIDGE BEARING
STEM	RITCHEY OS FORGED AL6061, 35MM REACH
BARS	560MM RITCHEY OS DOUBLE BUTTED AL6061, 18MM RISE
GRIPS	ER LOCK ON KRATON 92MM
SEAT POST	RITCHEY, 30.9MM x 225MM, AL2014
SADDLE	SDG FLY JR, BLACK
SEAT CLAMP	RITCHEY QR, 34.9MM
DERAILLEUR	SRAM GX 10SPD SHORT CAGE
SPEC NOTICE	Every effort has been made to ensure accuracy throughout this website. However, Early Rider reserves the right to change prices and bike specifications without prior notice

Geometry

A	Wheelbase	930mm
B	Head Angle	66°
C	Seat Tube Length	265mm
D	Chainstay Length	355mm
E	Seat Tube Angle	68°
F	Standover Height	520mm
G	Top Tube Length	514mm
H	Head Tube Length	90mm
I	Stack	442mm
J	Reach	317mm
K	Fork Length	423mm

Which bike is right for you?

Hellion X20

$2,099.00

18 total reviews

Color: Raw

Raw
Moonstone

Product variants

Description

A 20” full suspension trail bike that’s happy on dirt jumps, single track and the junior circuit. Built for 6-8 year olds with a spec coveted by much, much bigger kids. The Hellion X20 doesn’t need to go this hard.

SIZE OF LEG

21in

AGE

6-8years

WEIGHT

22.50lb

Hellion 20

$1,549.00

16 total reviews

Color: Electric Purple

Brushed Aluminium
Forest Green
Electric Purple

Product variants

Description

A race ready, pro line trail bike built to eat up single track, dirt jumps and everything in between. Reinforced aluminium frame, performance geometry and competition spec. Built for 6-8 years old with the podium in their sights.

SIZE OF LEG

211/4in

AGE

6-8years

WEIGHT

21.10lb

Product Main Features

Full Suspension frameset

Bike park optimised Geometry

Lightweight Suspension fork

Rear Shock

Gears - Chain drive

Product Specification

RST SPEX 100mm

RST SPEX 15 fork, 80mm

SRAM GX

Tubeless Rims

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average rating 4.8 out of 5

Based on 18 reviews

5 Stars

17 Reviews
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1 Star

1 Review

94% of reviewers would recommend this product to a friend

Weight	Rated 3 out of 5
Ease of assembly	Rated 4 out of 5
Quality	Rated 4 out of 5
Value	Rated 4 out of 5
Service	Rated 4 out of 5

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18 Reviews

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Reviewed by Trevor C., from United States

Verified Buyer

I recommend this product

Age of Rider

4-6

Rated 5 out of 5

Review posted

Hellion X20

This bike is incredible. Definitely for kids that are advancing rapidly and want a bike to match.

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Weight	Rated 4 out of 5
Ease of assembly	Rated 5 out of 5
Quality	Rated 5 out of 5
Value	Rated 5 out of 5
Service	Rated 5 out of 5

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Reviewed by Darren E., from United Kingdom

Verified Buyer

I recommend this product

Age of Rider

4-6

Rated 5 out of 5

Review posted

Amazing Bikes

Truly amazing bikes- have bought ones for my daughter and now my son. They both love them and ask to ride at every oportuinity. Amazing service from Early Rider.

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Weight	Rated 2 out of 5
Ease of assembly	Rated 5 out of 5
Quality	Rated 5 out of 5
Value	Rated 5 out of 5
Service	Rated 5 out of 5

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Reviewed by Cooper M., from United Kingdom

Verified Buyer

I recommend this product

Age of Rider

4-6

Rated 5 out of 5

Review posted

Just what we needed

Our son is only 5 but fanatical about bikes and riding - the Hellion X20 has made it possible for him to easily keep up with his older siblings and us adults and it’s so nice to ride that he’ll happily do big mileage on it. He adapted to the gears quickly and is already doing small jumps comfortably with the suspension which is soft enough for him to feel the full benefit. The quality of the bike is excellent and we have had great contact with the Early Rider team making us part of the community. Highly recommended from us! Thank you Early Rider!

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Weight	Rated 4 out of 5
Ease of assembly	Rated 5 out of 5
Quality	Rated 5 out of 5
Value	Rated 5 out of 5
Service	Rated 5 out of 5

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Reviewed by Enzo M., from United States

Verified Buyer

I recommend this product

Age of Rider

6-8

Rated 5 out of 5

Review posted

Love at first ride

My 7 year old son received his Hellion X20 on March 28 and he couldn't be happier about it. This is his third Early Rider, first full suspension bike and a huge leap from last seasons 3 speed hardtail that served him well.

Before the bike arrived we talked about possibly replacing a few of the stock parts to add some custom touches but, once we built the bike up, he changed his mind. He liked the look of the bike so much he refused to swap out a single thing on it.

He's had the bike out for 6 or 7 rides so far, a few around town cruises and a few trail rides, and loves everything about it. It's comfortable and inspires confidence in him - he's already cleared several climbs, descents and features on this bike that he was unable or unwilling to clear or attempt on his last bike.

Everything - the welds on the frame, the parts spec, the final fit and finish - are excellent, and the brakes and shifting were tuned spot on straight out of the box. We assembled the bike ourselves with no problems at all and the the Early Rider owners manual that accompanied the bike was the best I've seen in 35 years of cycling, well done!

I can't wait to see his progression this year - here's to a great season!

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Weight	Rated 4 out of 5
Ease of assembly	Rated 5 out of 5
Quality	Rated 5 out of 5
Value	Rated 5 out of 5
Service	Rated 5 out of 5

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Reviewed by Ricky R., from United Kingdom

Verified Buyer

I recommend this product

Age of Rider

2-4

Rated 5 out of 5

Review posted

Great little bike

Well built, light weight and awesome looking.

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Weight	Rated 5 out of 5
Ease of assembly	Rated 5 out of 5
Quality	Rated 5 out of 5
Value	Rated 5 out of 5
Service	Rated 5 out of 5

Was this helpful?

Hellion X20

﻿Adventure made easier.

Meet the Hellion X20

Closer look

The full story

Want to get with the program?

Early Rider Adventure Ambassadors

Specs and Geometry

Product Main Features

Product Specification

Hellion X20

Amazing Bikes

Just what we needed

Love at first ride

Great little bike

Adventure made easier.