Original strap has plenty of life left, though a new one can easily be sourced directly from IWC if preferred.
eBay
Quick Release Genuine Italian Leather Strap for IWC Pilot Watch – with Mark XX, XVIII, Spitfire, Little Prince (20mm/21mm)
Aliexpress UK
The IWC Pilot's Watch Chronograph Spitfire was introduced in 2004 as a more luxurious take on IWC's iconic pilot's chronograph. It is renowned for it's refined styling and tribute to the Supermarine Spitfire Aircraft.
eBay
Genuine Leather Rivets Watchband 20mm 21mm 22mm Fit for IWC Big Pilot's Watch TOP GUN SPITFIRE Le Petit Prince Calfskin Strap
Aliexpress UK
Here we have my IWC Pilot Spitfire UTC, with box and papers, original strap and buckle. Dates from 2006c classic pilots watch with UTC (gmt). Case is 39mm and is in great condition, glass is scratch free, dial is clean. Case is in great sharp condition, there is a small mart to rear of case as pictured. This is macro lens so not easy to see when on wrist. Any questions please ask, great watch, super rare especially as full set with original strap etc.
eBay
20mm 21mm 22mm Nylon Watchband For IWC Universal Pilot Mark 18 Spitfire Fighter Portugal Series Canvas Watch Strap Bracelet
Aliexpress UK
Model number: IW387902. Year: 2022. Case size: 41mm. Dial color: Green. Case material: Bronze. Our warranty: 12 months .
eBay
20mm 21mm 22mm Natural Rubber FKM VITON Watchbands for IWC IWC Big Pilot Watches IW3881 IW3894 IW3777 Soft Fluororubber Strap
Aliexpress UK
Bought from Laings in Edinburgh Nov 2015 - Original Box and Papers included.
eBay
FKM Fluoro Rubber Strap for IWC Big Pilot Mark Portugieser TOP GUN Men Quick Release Waterproof Sport Watch Band 20mm 21mm 22mm
Aliexpress UK
Unworn IWC spitfire automatic 39mm This watch is from 2020 and comes as a full set with Warranty until 2028 It has zero scratches and is practically brand new. It comes with a black leather IWC strap, I’ll also include 3 nato straps as per the picture. If you require more detailed pics, please let me know. The specs are as follows: Caliber Movement: Automatic Caliber/movement: 32110 Power reserve: 72 h Number of jewels: 21 Case material: Steel Case diameter: 39 mm Water resistance: 6 ATM Bezel material: Steel Crystal: Sapphire crystal Dial: Black Dial numerals: Arabic numerals
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20mm 21mm Curved End 316L Solid Stainless Steel Strap For IWC Pilot Little Prince IW37771 377710 Mark 17 18 Bracelet Watch Chain
Aliexpress UK
Give your a rugged, refined upgrade. 🕰️ Nylon Leather Watch Strap for Pilot (20–22mm, Waterproof Sailcloth). Waterproof Sailcloth Nylon – Durable, breathable, quick-dry. 1 × Nylon Sailcloth Strap (chosen size & color).
eBay
20mm 21 22mm Watch Strap for IWC Pilot Quick Release Rubber Wristband for PORTUGIESER PORTOFINO Sport Bracelet Waterproof Belt
Aliexpress UK
Clasp: Pin Buckle. Buckle Material: Stainless Steel. Band Material: Rubber. Band Length: 18cm. Band Width: 20mm,21mm,22mm. We're happy to help. Item Type: Watchbands.
eBay
20mm 21mm 22mm Rubber Silicone Strap for IWC PILOT Portugal PORTOFINO Watch Band for Huawei GT2/3 Quick Release Sport Bracelet
Aliexpress UK