5-Axis CNC & Horological Architecture
The Custom Audemars Piguet Royal Oak Selfwinding Chronograph 41mm DiW Carbon Racer Edition Reference 26240 is a 5-axis Swiss CNC commission machined in Forged Carbon TPT & Titanium (41.0 mm x 12.4 mm) weighing 66.0g on our Mettler-Toledo analytical balance, driven by Audemars Piguet Cal. 4401 Flyback Chronograph regulated to +0.7 s/d, 297 deg at 28,800 vph with a 72-hour power reserve beneath a double anti-reflective sapphire crystal.
| 01 / CNC Blueprint Entity & Reference | Audemars Piguet — Royal Oak Selfwinding Chronograph 41mm | Ref. 26240 | SKU: AT-CNC-26240-W118 |
|---|---|
| 02 / 5-Axis CNC Metallurgy & Gold Purity | Forged Carbon TPT & Titanium — 5-Axis Swiss CNC Precision Architecture • 1:1 Authentic Reference Mass • Bespoke Collector Commission |
| 03 / Analytical Bench Weight (1:1 Reference Mass) | 66.0g — 1:1 Authentic Reference Mass Verified on Mettler-Toledo Analytical Scale |
| 04 / Custom Bezel, Gem-Setting & Case Geometry | Octagonal Brushed & Chamfered Bezel Locked by 8 White Gold Hexagonal Screws with Anti-Reflective Scratch-Resistant Sapphire Crystal • 66.0g Carbon TPT • 41.0 mm x 12.4 mm |
| 05 / Regulated Super Clone Movement Calibre | Audemars Piguet Cal. 4401 Flyback Chronograph — Swiss Super Clone Mechanical Calibre Regulated to +0.7 s/d, 297 deg |
| 06 / Barrel Power Reserve & Balance Frequency | 72-Hour Power Reserve • 28,800 vph (4 Hz) Free-Sprung Balance Wheel |
| 07 / Optical Sapphire Crystal (Double AR) & Sealing | Scratch-Resistant Sapphire Crystal with Double Anti-Reflective Coating • 50m / 5 ATM |
| 08 / Bespoke Dial & Integrated Bracelet Spec | 41.0 mm x 12.4 mm • Hand-Finished Sunray Collector Dial with Hand-Finished Luminous Appliques & Hands • Hand-Brushed & Chamfered Vulcanized Elastomer / Alligator Strap & Folding Clasp |
Engineered inside our Geneva 5-axis CNC Audemars Piguet custom atelier, the Custom Audemars Piguet Royal Oak Selfwinding Chronograph 41mm DiW Carbon Racer Edition Reference 26240 is machined from solid Forged Carbon TPT & Titanium billets to micron-level tolerances (41.0 mm x 12.4 mm). Every bevel, lug chamfer, and Hand-Finished Sunray Collector Dial with Hand-Finished Luminous Appliques & Hands is hand-finished on our watchmaker bench, yielding a certified reference weight of 66.0g verified under our Fischer XRF and Mettler-Toledo QC protocol.
What Are the Horological & Metallurgical Benchmarks of Audemars Piguet Royal Oak Ref. 26240?
The Audemars Piguet Royal Oak Reference 26240 is a precision-engineered luxury timepiece crafted in Forged Carbon TPT & Titanium (41.0 mm x 12.4 mm) with Hand-Finished Sunray Collector Dial with Hand-Finished Luminous Appliques & Hands, Octagonal Brushed & Chamfered Bezel Locked by 8 White Gold Hexagonal Screws with Anti-Reflective Scratch-Resistant Sapphire Crystal, and a verified Mettler-Toledo mass of 66.0g, because the Audemars Piguet Cal. 4401 Flyback Chronograph movement is regulated across six positions to chronometric tolerances with a 72-hour power reserve.
5 Core CNC & Chronometric Specifications:
- Blueprint Reference: Custom Audemars Piguet Royal Oak Selfwinding Chronograph 41mm DiW Carbon Racer Edition — Official Ref. 26240 (SKU: AT-CNC-26240-W118).
- 5-Axis CNC Metallurgy: Forged Carbon TPT & Titanium case (41.0 mm x 12.4 mm) and Octagonal Brushed & Chamfered Bezel Locked by 8 White Gold Hexagonal Screws with Anti-Reflective Scratch-Resistant Sapphire Crystal with hand-polished chamfers.
- Verified Bench Mass: 66.0g confirmed on a Mettler-Toledo analytical gram scale prior to dispatch.
- Super Clone Calibre: Audemars Piguet Cal. 4401 Flyback Chronograph operating at 28,800 vph (4 Hz) with 72-hour power reserve and +0.7 s/d, 297 deg accuracy.
- Sapphire Optics & Sizing: Double anti-reflective sapphire crystal, 50m / 5 ATM sealing, and 19 wrist sizing options (14.0–22.0 cm).
Within the Audemars Piguet Royal Oak horological sub-silo, collectors also compare the Audemars Piguet Royal Oak Selfwinding Chronograph 41mm Custom Tapestry Dial Deep Crystal Optics Ref. 26240ST.OO.1320ST.08 (180.6g) and the Audemars Piguet Royal Oak Double Balance Wheel Openworked 41mm Baguette Blue Topaz Bezel 18K White Gold Free-Sprung Calibre Ref. 15412BC.TO.1220BC.01 (224.5g).
- Parent Brand & Royal Oak Silo Hub: Browse All 147 Certified Audemars Piguet Solid 18K Gold & Pt950 Watches
- Technical Research Monograph: 5-Axis Swiss CNC Milling Solid 18K Gold Watch Cases (±2um) (All 5 Journal Monographs)
- Homepage Master Register: Return to 18K CUSTOM Homepage (Complete 774-Watch Solid 18K Gold & Pt950 Register)
- All-Brands Catalogue: Explore Complete 12-Maison Horological Catalogue (/shop/)
- Metallurgical & 4K QC Verification: Fischer XRF Au750 Protocol • 3-Year Mechanical Warranty • Insured Armored Delivery
How is the Carbon TPT case of this Audemars Piguet 26240 machined?
Our Geneva CNC specialists mill the monobloc middle case, bezel, and bracelet geometry on 5-axis Swiss machining centers in Forged Carbon TPT & Titanium to achieve the authentic 66.0g reference mass.
Can the bracelet or strap be pre-sized to my exact wrist circumference?
Yes. Choose from 19 precision wrist circumference options (14.0 cm to 22.0 cm, or full unsized factory length). All removed solid links are sealed inside your presentation box.
How is the Audemars Piguet Cal. 4401 Flyback Chronograph tested on the atelier workbench?
We record a personalized 4K bench video showing the Audemars Piguet Cal. 4401 Flyback Chronograph (28,800 vph, 72-hour reserve) running at +0.7 s/d, 297 deg on our Witschi Chronoscope alongside Fischer XRF and Mettler-Toledo gram scale verification.
What dial and bezel specifications distinguish Audemars Piguet Royal Oak Ref. 26240?
Reference 26240 combines Hand-Finished Sunray Collector Dial with Hand-Finished Luminous Appliques & Hands and Octagonal Brushed & Chamfered Bezel Locked by 8 White Gold Hexagonal Screws with Anti-Reflective Scratch-Resistant Sapphire Crystal within a 41.0 mm x 12.4 mm Forged Carbon TPT & Titanium case weighing 66.0g, verified via Fischer XRF spectroscopy and powered by Audemars Piguet Cal. 4401 Flyback Chronograph.
Custom Audemars Piguet Royal Oak Selfwinding Chronograph 41mm DiW Carbon Racer Edition Ref. 26240
5-Axis Swiss CNC Forged Carbon TPT & Titanium • 66.0g Verified Mass • Regulated Audemars Piguet Cal. 4401 Flyback Chronograph