LS2 FF805 Thunder GP Aero full-face helmet in Fermín Aldeguer 2025 Replica livery
ECE 22.06
360° — drag me
1,280 gECE 22.06
02 · Data & docs

The facts.

Technical data
BrandLS2
ModelFF805 Thunder GP Aero
EditionFermín Aldeguer 2025 Replica
Shell materialCarbon 6K
Weightapprox. 1,280 g ± 50 g
CertificationECE 22.06
Visor standardClass A polycarbonate, anti-scratch, UV protection, Pinlock 120 Max Vision ready
Retention systemDouble-D-ring with reinforced strap
Intended useRoad and track
DescriptionThe whole story

The LS2 FF805 Thunder GP Aero Fermín Aldeguer 2025 Replica is where championship heritage meets the road. Born from the race livery worn by Ady Aldeguer during the 2025 season, this full-face carbon helmet carries its visual identity as seriously as its safety credentials — a rare thing in a replica-edition helmet at any price point.

Key Features

  • Carbon 6K outer shell delivers a weight of approximately 1,280 g (± 50 g), reducing fatigue on long rides and track days alike
  • Race-derived aerodynamic spoiler profile cuts lift and maintains stability at high speed
  • Class A polycarbonate visor with anti-scratch coating, UV protection and Pinlock 120 Max Vision anti-fog preparation
  • Visor quick-release mechanism with metal lock for tool-free changes in seconds
  • Multi-inlet ventilation system — chin, front and crown intakes with rear exhaust channels — keeps airflow active throughout the shell
  • ECE 22.06 certified with a Double-D-ring retention strap and multi-density ePS liner for category-leading impact absorption
  • Fermín Aldeguer 2025 Replica graphics feature the season livery, bold line work, Glow Comprehensive reflective accents and exposed carbon weave

Design and Heritage

The Fermín Aldeguer 2025 Replica edition earns its name rather than borrowing it. The livery replicates the specific colour palette and graphic architecture used on Aldeguer's race helmet during the 2025 championship campaign. Exposed Carbon 6K weave is visible through the design, not hidden beneath it — the shell's structure becomes part of the aesthetic. Reflective Glow Comprehensive accents add low-light presence without diluting the competition character. If you are after a helmet that carries a genuine racing story, this is the one.

Shell, Safety and Construction

LS2 built the FF805 Thunder GP Aero around a Carbon 6K monocoque shell, keeping the finished helmet to approximately 1,280 g ± 50 g. The multi-density expanded polystyrene liner manages energy across different impact zones rather than applying a single-density compromise. Retention is handled by a Double-D-ring closure with a reinforced strap — the industry standard for race and track use. Emergency cheek-pad release tabs allow first responders to remove the helmet safely in the event of an incident. ECE 22.06 certification confirms the design meets current European road-legal requirements.

Aerodynamics and Visor

The GP Aero suffix is not decoration. The helmet's profile incorporates a racing spoiler geometry designed to reduce aerodynamic lift and suppress turbulence at elevated speeds, keeping neck load manageable during sustained high-speed riding. The panoramic visor offers a generous horizontal and vertical field of view. It is manufactured to optical Class A standard, treated with an anti-scratch hard coating and features UV protection as standard. The Pinlock 120 Max Vision preparation means the anti-fog insert can be fitted without modification — an important detail for variable British weather and early-morning track sessions alike.

Ventilation and Comfort

Ventilation inlets are positioned at the chin bar, the crown and the forehead, channelling air through the shell and evacuating heat via rear exhaust vents. The full interior lining is removable, machine washable and treated with an antibacterial finish to maintain freshness across long riding seasons. Reflective detailing on the shell improves visibility in low-light conditions without any action required from the rider.

Fitment and Compatibility

The LS2 FF805 Thunder GP Aero is a universal full-face helmet available across a broad size range. Three distinct shell sizes are used across the range to ensure proportionate fit at every head circumference, rather than stretching a single mould across all sizes. Use the table below to identify the correct size.

Head circumference (cm) Size
51–52 cm XXS
53–54 cm XS
55–56 cm S
57–58 cm M
59–60 cm L
61–62 cm XL
63–64 cm XXL
65–66 cm 3XL
67–68 cm 4XL

Specifications

  • Model: LS2 FF805 Thunder GP Aero
  • Edition: Fermín Aldeguer 2025 Replica
  • Shell material: Carbon 6K
  • Weight: approx. 1,280 g ± 50 g
  • Certification: ECE 22.06
  • Visor: Class A polycarbonate, anti-scratch, UV protection, Pinlock 120 Max Vision ready
  • Retention: Double-D-ring with reinforced strap
  • Liner: removable, washable, antibacterial
  • Intended use: road and track
FitmentBy head size — not by bike
03 · Build your Kit

The kit studio.

Everything fits the LS2 FF805 Thunder Carbon
Visors · 7
LS2 Visor FF805 Thunder+ $46.69
LS2 FF805 Thunder Iridium Blue Iridium Visor 800805VIS17+ $46.69
LS2 FF805 Thunder Iridium Gold Iridium Visor 800805VIS19+ $46.69
LS2 FF805 Thunder Replacement Visor+ $46.69
LS2 FF805 Thunder Helmet Visor+ $46.69
LS2 FF805 Thunder Clear Replacement Visor 800805VIS01+ $46.69
LS2 FF805 Thunder Replacement Visor+ $46.69
Anti-fog · Race day · Carry · 2
LS2 Pinlock 120XLT MaxVision Insert DKS408+ $40.85
LS2 Pinlock Tear-Off Post Set+ $7.37
Your kit — live preview
+
Nothing picked yet.
Kit total+ 0,00 €
Kit ships together with the helmet
04 · The Inter-Pace Rating

Rated. Certified. Lit.

All 85 points of the racing matrix were assessable
Rated in 2 categoriesRacing 77Sport 73
iP77/100RECOMMENDED Drag to spin
The Inter-Pace Rating
0/100
0507085100
RecommendedSame shell, no race entry
P21 on our racing grid · 22 rivals in scrutineering · rated 2026-09-02
Entry 0–49 · Solid 50–69 · Recommended 70–84 · Benchmark 85–100
ECE 22.06 · EQRS · DOUBLE-D · 1,341 G · PINLOCK · CARBON FIBRE WITH ARAMID · ECE 22.06 · EQRS · DOUBLE-D · 1,341 G · PINLOCK · CARBON FIBRE WITH ARAMID ·

“Nine of our ten FF805 listings carry ECE 22.06 alone — including all the replicas. The 1,341 g carbon shell and the Pinlock 120 are unchanged; only the race entry is missing, and for 170 € less.”

— the Inter-Pace crew
Homologation8/15
ECE 22.06 street homologation8/8
FIM FRHPhe racing homologation0/7

ECE 22.06 only — the GP Pro FIM is a separate listing.

Safety equipment7/10
Multi-density EPS liner2/2
EQRS emergency release system2/2
double-d closure2/2
3 shell sizes1/2
Rotational-impact system (MIPS or equivalent) — not listed0/2

Double-D and a carbon-aramid shell in three sizes.

Ventilation6/7
Vents operable with gloves on2/2
Airflow in independent reviews4/5

A deep chin intake feeds the visor and the face.

Aero & stability7/8
Aerodynamic spoiler / stabiliser2/2
Stability at speed in reviews5/6

Rear spoiler, stable at speed in testing.

Weight4/5
1,341 g measured4/5

1,341 g measured — the lightest shell in this field.

Wind noise3/5
Wind noise at motorway speed3/5

Average; the venting is audible when open.

Interior comfort6/8
Fully removable lining2/2
Washable lining1/1
Comfort in independent reviews3/5

Functional rather than plush.

Fit range4/5
6 sizes2/2
3 shell sizes across the range1/2
intermediate head shape1/1

Three shell sizes across six helmet sizes.

Character5/5
full-face — built for racing3/3
Carbon fibre with aramid2/2

A full carbon race shape at a mid-range price.

Price positioning10/10
Delivered quality against its price in this class10/10
509 € — Premium

Carbon and a Pinlock 120 in the box for 509 €.

Certification
ECE 22.06 street homologation
Price-class
EntryBasicMid-range$962.38PremiumHigh classHigh-endFlagship

509 € — Premium. Hover the bar for each range. Value is scored against the racing field, not in the abstract.

Safety & tests
SHARP impact ratingawaiting · not counted
CERTIMOOV protocolawaiting · not counted
Crew scrutineering
How this rating is made: crew scrutineering, cross-checked against ChampionHelmets road test ChampionHelmets product page SHARP safety rating page LS2 official product page LazyAssBikers spec sheet Tests count only when a result exists — never a penalty
The race-helmet gridmint = this helmet
90/100 P1 Shoei X-SPR PRO FIMBenchmark · gap —
89/100 P2 Shoei X-SPR PRO FIM 2Benchmark · gap −1
87/100 P3 Shark Aeron GP FIM 2Benchmark · gap −3
86/100 P4 Suomy S1-XR GPBenchmark · gap −4
85/100 P5 MT-Helmets KRE 2 PLUS FIM Racing #2Benchmark · gap −5
84/100 P6 Arai RX-7V FIMRecommended · gap −6
84/100 P7 Shark Aeron GP FIMRecommended · gap −6
83/100 P8 Arai RX-7V FIM 2Recommended · gap −7
82/100 P9 Airoh GP 800 FIMRecommended · gap −8
82/100 P10 NHK Helmet GP-R TechRecommended · gap −8
81/100 P11 Alpinestars Supertech R10Recommended · gap −9
81/100 P12 Just1 J-GPRRecommended · gap −9
81/100 P13 LS2 FF805 Thunder FIMRecommended · gap −9
81/100 P14 Nexx X.R3R Pro FIM EvoRecommended · gap −9
80/100 P15 KYT KX-1Recommended · gap −10
77/100 P21 LS2 FF805 Thunder ECE onlyRecommended · gap −13You’re viewing
Radar · head to head

FF805 Thunder ECE only vs

FF805 Thunder ECE only · 77 · 0
Full comparison — Matrix · Radar · Duel — lives on slide 05.
05 · Compare

Compare the grid.

FF805 Thunder ECE only77/100Recommended
VS
0/100
Pick your challenger — every bar re-fights instantly
How these ratings are made: Inter-Pace crew scrutineering, cross-checked against ChampionHelmets road test ChampionHelmets product page SHARP safety rating page LS2 official product page LazyAssBikers spec sheet SHARP / CERTIMOOV count only when results exist.
06 · Complete the look

Head to toe.

Auto-matched to this helmet's sector — Racing
Head to toeAuto-filled from the Racing sector
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07 · Support

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