FCS II Julian Wilson AirCore Signature Thruster Fin Set (FCS II) — full deck view

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FCS · Signature Thruster Fin Set (FCS II)

FCS II Julian Wilson AirCore Review

9.8/ 10 Aggregate score
9.8
Aggregated from 1 scored source
Average price$170Range $170–$170 across 1 retailersSee sources

Julian Wilson's 'JW' signature thruster set in Performance Core with AirCore — FCS's ultralight foam-cored construction. $170 USD, rated 4.9/5 across 9 verified reviews on the FCS site.

View on FCS
Quick specs
System
FCS II
Set
Thruster (tri) — 3 fins
Construction
Performance Core + AirCore
Sizes
XS, Medium, Large
X-Small
Under 55 kg / 120 lbs
Medium
65–80 kg / 145–175 lbs

FCS describes the set simply: "Julian Wilson's 'JW' signature fin featuring AirCore construction. Fast, Ultra Light with Quick Response."

AirCore is the interesting part. FCS presses a polyurethane foam core that mimics the geometric foil of the fin, which reduces the amount of fiberglass needed in the RTM moulding process. The result is a much lighter fin, and — more usefully — total control over how the flex is tuned.

The set comes in three sizes: X-Small for riders under 55 kg, Medium for 65–80 kg, and Large for 75–90 kg.

Pros & cons
  • AirCore foam core cuts weight noticeably versus solid PC fins
  • Fast with quick response — built for above-the-lip surfing
  • Flex is tuned through the core, not just the glass layup
  • Strong verified owner rating (4.9/5 across 9 reviews)
  • $170 is premium pricing for a three-fin set
  • Only three sizes — nothing between XS and Medium
  • Lively flex suits powerful surfing more than steady trim

How it surfs

Julian Wilson's surfing is built on speed into the lip and quick recovery out of the air, and the fin reflects that: light in the tail, quick to load and unload, and less of the heavy planted drive you get from a solid PC template like the Mick Fanning PG.

That makes it a specific choice rather than an all-rounder. If you surf front-foot and want the board to hold a long, drawn line, the Carver or the MF PG Pro will suit you better. If you surf off the back foot and want the tail to release on command, this is the set.

Reviews on the FCS site are notably strong — nine reviews averaging 4.9/5 — with several noting it as a standout grom and light-rider fin thanks to the reduced weight.

Volume & sizing chart

Use the chart below as a starting point. Add half a litre if you are less experienced, subtract half a litre for a looser feel.

SizeVolumeRider weightBest for
X-SmallPC + AirCoreUnder 55 kg / 120 lbsGrom
MediumPC + AirCore65–80 kg / 145–175 lbsIntermediate → Advanced
LargePC + AirCore75–90 kg / 165–200 lbsIntermediate → Advanced

How it compares

BoardBest atWave rangeAggregate score
FCS II Julian Wilson AirCoreLight, fast, quick responseWaist to overhead9.8
FCS II Mick Fanning PG ProDrive and holdWaist to overhead8.9
FCS II Mason Ho SignatureOne-quiver signature thrusterKnee to overhead9.4
FCS II CarverAll-round thruster benchmarkWaist to overhead9.8

Verdict

A verified $170 USD listing, nine owner reviews averaging 4.9/5, and three confirmed video sources including a direct Carver comparison. Light, fast and quick to release — a specialist back-foot fin rather than a do-everything set.

Aggregate score: 9.8 / 10
Aggregated from 3 independent sources — see full list below.

What reviewers around the web are saying

Surfex does not test gear directly. Below are independent retailer and editorial sources. When a source publishes a numeric score, it is normalized to a five-point scale; otherwise the source is listed without a score.

Aggregate score
9.8/ 10
9.8
3 sources
SourceScoreSummary
FCS owner reviews (9 reviews)
9.8
4.9 / 10
"Nine published reviews on the FCS product page, almost all five-star — recurring themes are light weight and response."
FCS — JW Signature FinNo numeric score"FCS's own breakdown of the JW signature template and AirCore construction."
USEDSURF — Carver PC vs Julian Wilson AirCoreNo numeric score"Head-to-head comparison test between the FCS II Carver PC and the Julian Wilson AirCore set."

Where to buy & average price

Listed prices come from verified retailer pages. The average price below is an unweighted mean of verified retailer prices — converted to USD (≈) when retailers list in different currencies. Click any retailer to verify the native-currency price.

Average price
$170
$170–$170 · 1 retailers
RetailerPricevs. average
FCS (US)$170Visit

Frequently asked questions

What size Julian Wilson fin should I buy?+

FCS lists X-Small for under 55 kg, Medium for 65–80 kg and Large for 75–90 kg. If you sit between Medium and Large, go Medium for looseness and Large for hold.

What is AirCore construction?+

FCS presses a polyurethane foam core that mimics the fin's foil, reducing the fiberglass needed in moulding. The fin is much lighter and the flex can be tuned precisely.

Julian Wilson vs FCS II Carver — which set?+

The Carver is the all-round drive benchmark. The JW set is lighter and quicker to release, better suited to back-foot, above-the-lip surfing.

Do these fit any FCS II board?+

Yes — they fit all FCS II plugs, and with an FCS II compatibility kit they can also be used in original FCS boxes.

Are they worth $170?+

They are premium priced. The weight saving and flex tuning are real, but the Carver at $105 delivers most of the performance for most surfers.