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AGV K1 S Helmet vs Arai Regent-X

The Arai Regent-X is the stronger helmet for riders who want top-tier protection and a refined fit: it carries Snell M2020 alongside DOT, uses Arai's multi-density one-piece liner, and comes in six sizes across Arai's intermediate-oval shape. The AGV K1 S is the easier everyday pick: lighter on the spec sheet at about 1,500 g, with a wide 190° visor, five front vents, a Pinlock-ready shield and a removable, washable Dry-Comfort liner. Owners rate the K1 S well at 4.7 from 1,100 ratings, while the Regent-X earns its keep through Arai's build quality and its semi-removable liner that is fussier to clean.

  • Choose the AGV K1 S if you want a light full-face with a wide field of view, strong ventilation and a liner you can pull out and wash.
  • Choose the Arai Regent-X if maximum certified protection, a precise intermediate-oval fit and Arai's shell engineering matter more to you than a washable liner.

Prices

  • AGV K1 S Helmet: $179.14 at eBay (last seen Nov 10)
  • Arai Regent-X: $449.96 at eBay (last seen Nov 9)
  • Difference: the AGV K1 S Helmet is $270.82 cheaper than the Arai Regent-X at the latest prices (Nov 9 and Nov 10)
AGV
AGV K1 S Helmet

AGV K1 S Helmet

4.7(1,100 ratings)
$179.14at eBayChecked 16 h ago
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Pros
  • Light at roughly 1,500 g
  • Wide 190° horizontal view
  • Five front vents and two rear extractors
  • Removable, washable liner; glasses-friendly cheek pads
  • Tool-free XQRS shield changes, Pinlock-ready
Cons
  • Thermoplastic shell, not composite
  • No sun visor
  • Pinlock insert not included
  • Only two shell sizes
Arai
Arai Regent-X

Arai Regent-X

$449.96at eBayChecked Nov 9
See all prices and details
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Store links may earn us a commission.

Pros
  • Snell M2020 plus DOT certification
  • Composite PB-CLC shell
  • One-piece multi-density liner
  • Intermediate-oval fit in six sizes
  • VAS shield system with secure latch
Cons
  • Liner is only semi-removable
  • Heavier than the K1 S
  • No published weight figure
  • Fluorescent finishes are not covered by warranty

What separates them

AGV K1 S HelmetArai Regent-X
Safety certificationDOT and ECE certifiedDOT and Snell M2020 certified
Shell materialHigh Resistance ThermoplasticPB-CLC composite shell
WeightAbout 1,500 gHeavier composite build, weight not published
Impact liner4-density EPSOne-piece multi-density liner
Interior linerRemovable and washable Dry-Comfort fabricSemi-removable
Field of view190° horizontal viewStandard VAS shield opening
Ventilation5 front vents, 2 rear extractorsOne-piece rear exhaust plus side exhausts
Fit shapes and sizes2 shell sizes, one fit shapeIntermediate Oval shape, XS to XXL

Price history

  • AGV K1 S Helmet: lowest $135.64 on Nov 10 at Motocard.com.
  • Arai Regent-X: lowest $550.00 on Nov 11 at Amazon.

Prices at every store

AGV K1 S Helmet

  • eBayNew

    In stockSold by the_helmetdiscounter

    $179.14Checked 16 h ago
    Visit eBay
  • Motocard.comNew

    In stockShips from abroad · duties may apply

    $184.63Checked 16 h ago
    Visit Motocard.com
  • chromeburner.comNew

    In stockShips from abroad · duties may apply

    $187.76Checked 16 h ago
    Visit chromeburner.com
  • WCL HelmetsNew

    In stock

    $192.00Checked 16 h ago
    Visit WCL Helmets

Store links may earn us a commission.

All 16 stores and price history →

Arai Regent-X

  • Pit Lane MotoNew

    In stock

    $629.95Free shippingChecked 8 h ago
    Visit Pit Lane Moto
  • Motorcycle CloseoutsNew

    In stock

    $659.95Free shippingChecked 8 h ago
    Visit Motorcycle Closeouts
  • eBayNew

    Availability unknownSold by pinpointparts (99.7% positive, 16,900 ratings)Returns: Set by the eBay seller; the eBay Money Back Guarantee covers an item that doesn't arrive or isn't as described.

    $449.96+ $19.95 shippingChecked Nov 9
    Visit eBay
  • AmazonNew

    Availability unknown

    As an Amazon Associate, Deal.ai earns from qualifying purchases.

    $550.00Free shippingChecked 8 h ago
    Visit Amazon

Also available at

  • eBayCheck price at eBay

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All 13 stores and price history →

Specs compared

SpecAGV K1 S HelmetArai Regent-X
Weight1.500 g (+/- 50g)—
Shell materialHigh Resistance Thermoplastic—
Retention systemDouble D—
VisorPinlock® ready (not included)—
Horizontal view190° Unmatched Horizontal View—
Ventilation5 Large Front Vents, innovative extractors, inc…—
EPS densities4 Densities EPS Max protection in every Area—
Sun visorNO—
ARK readyNO—
Shell sizes2 shell sizes—
Front vents5 front vents—
Rear extractors2 rear extractor—
Show all 27 specsShow fewer specs
SpecAGV K1 S HelmetArai Regent-X
StyleFull Face—
ECE CertifiedYes—
UseMotorcycle—
SizeSmall—
Interior fit shape—INTERMEDIATE OVAL (IO)
Shield system—VAS SHIELD SYSTEM
Shell construction—PB-CLC SHELL
Liner—one-piece multi-density liner
Interior liner—Semi-removable Liner
Base flare—

What reviewers say

AGV K1 S Helmet

  • 4.7 / 51,100 ratings

Owners rate the K1 S highly, praising its wide vision, comfortable liner and strong ventilation for the class. Common complaints are the lack of a sun visor, the extra cost of the Pinlock insert, and weight that some find noticeable on long rides.

What people mention
  • VisibilityPraisedRiders say the 190-degree visor gives an unusually wide view with few blind spots.
  • VentilationPraisedOwners report strong airflow from the five front vents and rear extractors on hot days.
  • ComfortPraisedThe Dry-Comfort liner and glasses-friendly cheek pads are called comfortable for long rides.
  • WeightMixedSome riders find the roughly 1,500 g weight fine, while others notice it on longer trips.

Arai Regent-X

Owners and reviewers treat the Regent-X as a comfortable, solidly built Arai with an easy shield system and a fit that suits intermediate oval heads. Most criticism centers on ventilation and the semi-removable liner rather than protection.

What people mention
  • FitPraisedRiders with intermediate oval heads report a comfortable, secure fit.
  • Shield systemPraisedThe VAS mechanism is described as quick and easy to learn.
  • VentilationCriticisedAirflow is called modest next to more vent-heavy helmets.
  • LinerMixedThe interior is comfortable but only semi-removable for washing.

Questions and answers

Which is safer, the K1 S or the Regent-X?
The Regent-X carries Snell M2020 in addition to DOT, a tougher standard than DOT alone. The K1 S is DOT and ECE certified, which is solid, but the Regent-X has the edge on certified protection.
Which helmet is better for hot weather?
The K1 S runs five front vents and two rear extractors, and its washable liner handles sweat better. The Regent-X vents through a one-piece rear exhaust and side exhausts, which is effective but its liner is only semi-removable.
Is the Regent-X worth stepping up to from the K1 S?
Yes if you want a composite shell, Snell certification and Arai's intermediate-oval fit. Stay with the K1 S if you want less weight, a wider view and a liner you can wash after every ride.
Which has the better field of view?
The K1 S, with its 190° horizontal view. The Regent-X uses the VAS shield system, which prioritizes shell shape and a secure latch over a wide opening.
Do either come with a Pinlock insert?
The K1 S is Pinlock-ready but the insert is not included. Arai does not list Pinlock on the Regent-X, so plan on an anti-fog solution separately.
Which fits a rounder head?
The Regent-X is built on Arai's Intermediate Oval shape, which suits many riders. The K1 S uses a single fit shape, so try it on if your head is notably round or long.

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Buying guides that pick them

  • Best full-face motorcycle helmets for street riding
5mm wider base
Rear exhaust—One-piece rear exhaust
Side exhausts—Side exhausts
Sizes—x-small, small, medium, large, x-large, xx-large
Certification—DOT; Snell M2020
Jawline adjustment—five-millimeter