What it replaces
The Caliber 4130 ran in the Rolex Daytona from 2000 to 2023, replacing the Zenith-supplied El Primero in the previous-generation Daytona. The 4130 was a landmark movement: fully in-house, column-wheel chronograph, vertical clutch (no jitter when starting the chrono), 72-hour power reserve, and chronometer-grade accuracy. It was so well-engineered that Rolex kept it essentially unchanged for 23 years. The 4131, launched at Watches and Wonders 2023 inside the new Daytona ref. 126500LN (panda dial, two-tone, gold variants), is the 4130's evolution rather than its replacement; architecturally it is roughly 80% the same.
What is new
Three changes. Chronergy escapement: the same nickel-phosphorus, skeletonised lever and escape wheel that Rolex introduced in the 3235 in 2015 now arrives in the chronograph line. The 4131 is the first chronograph to get it. Open balance bridge: visible through the new transparent caseback (the first display caseback on a steel Daytona), with finishing that hints at higher-end Patek/Lange territory. Refreshed gear train: the chrono module geometry has been cleaned up; it is slightly thinner overall, allowing the new case design (40 mm but visually slimmer than the 116500LN). The mainspring barrel and rotor are essentially carried over from the 4130.
What stays the same
The 4131 keeps the architectural strengths that made the 4130 a benchmark. Vertical clutch: the chrono seconds hand starts and stops without the side-shake jitter you see on horizontal-clutch movements. Column-wheel control: the chrono pushers feel positive and tactile, with a satisfying click rather than a mushy lever feel. 72-hour power reserve: enough to take the watch off Friday night and have it still running Monday morning. Parachrom Bleu hairspring: niobium-zirconium, paramagnetic, blue under bright light. Free-sprung Microstella balance: regulated by weights on the rim, no traditional regulator pin. The 4131 retains Rolex's in-house Superlative Chronometer certification at -2/+2 sec/day.
Watches it powers
Currently exclusive to the new Cosmograph Daytona 126500LN (2023+) and its precious-metal siblings: 126506 platinum, 126508/126518 yellow gold, 126509 white gold, 126509 ceramic-bezel white gold, 126528 yellow Rolesor, 126538 yellow gold, 126508 panda meteorite. The Daytona "Le Mans" 100th-anniversary white-gold edition (ref. 126529LN) also runs the 4131. By 2026 the older 4130 is no longer in production; modern Daytonas are 4131-only.
Buying notes
The 4131-equipped Daytona 126500LN is the most-allocation-restricted modern Rolex: AD waits in 2026 are 3-6 years for cold-list buyers and 12-24 months for established VIPs. Grey-market premiums hover at 40-60% over MSRP (CHF 14,800 retail trades for CHF 22-25k in 2026). The 116500LN it replaces, while no longer in production, is now widely available pre-owned at near-retail prices. See how long does it take to receive a Rolex? for the full allocation picture.
Service notes
Rolex service for a Daytona currently runs CHF 1,000-1,200, including a 2-year warranty. The 4131 is not yet old enough to have an established outside-Rolex service market; the Chronergy parts and the new balance bridge are factory-restricted, so for the first generation of 4131s, brand service is essentially the only option. Expected service interval: 10 years, same as the 3235 family. For pre-2023 Daytonas with the 4130, both brand and competent independent service are available; expect CHF 900-1,100 at brand, CHF 600-800 independent. See our service cost guide for context.
