| Component | Specification |
|---|---|
| Engine | Milwaukee-Eight VVT 121 (1,977cc) |
| Oil Type | Screamin’ Eagle SYN3 Synthetic 20W50 |
| Oil Capacity | 4.7 Liters (5.0 Quarts) |
| Front Tire | 130/60B19 61H |
| Rear Tire | 180/55B18 80H |
| Battery | 66000101 (30Ah AGM) |
| Spark Plug Gap | 0.76–0.84 mm |
The 2024 Harley-Davidson CVO Road Glide (FLTRXSE) represents a watershed moment in American V-twin engineering. Most notably, this model introduces Variable Valve Timing (VVT) to the Milwaukee-Eight platform—a first for the manufacturer. This advancement allows for a broader powerband and improved fuel efficiency by advancing or retarding the camshaft timing across the RPM range, resulting in 115 HP and 139 ft-lb of torque.
Engineering Analysis: The VVT 121 Powerplant
The 121 cubic inch engine utilizes new liquid-cooled cylinder heads that significantly improve thermal management compared to previous Twin-Cooled iterations. By focusing cooling around the exhaust valve areas, Harley-Davidson engineers have increased the compression ratio to 11.4:1, allowing for more aggressive mapping without the risk of detonation. The intake tract has also been redesigned with a high-performance airbox and a 58mm throttle body.
Maintenance & Service Intervals
For the FLTRXSE/24, precision in maintenance is paramount to preserve the VVT mechanism and the high-output cooling system. Use only Screamin’ Eagle SYN3 Synthetic 20W50 to ensure the hydraulic tensioners and VVT phaser operate within factory tolerances. The oil capacity is a substantial 4.7 liters.
Ignition and Electrical
The high-compression 121 engine requires consistent spark delivery. Ensure H-D 6R10 plugs are gapped precisely between 0.76 and 0.84 mm. Given the extensive infotainment suite (Skyline OS), the 30Ah AGM battery (Ref: 66000101) must be maintained with a dedicated tender during periods of inactivity to prevent voltage drops that can trigger ECU fault codes.
Chassis & Contact Patch
The 2024 CVO Road Glide features a significant weight reduction (approx. 35 lbs) over its predecessor. To maintain the intended flickability of the inverted 47mm forks and Showa remote-adjustable rear shocks, tire pressures must be strictly adhered to: 36 psi (Front) and 42 psi (Rear). The Dunlop Harley-Davidson Series tires are specifically carcass-tuned for the increased torque output of the 121 engine.
Verdict
The FLTRXSE/24 is not merely a trim level; it is a fundamental redesign of the Grand American Touring experience. From its refined aerodynamics to the sophisticated VVT-equipped heart, it demands a higher level of technical oversight than any previous Road Glide. Proper adherence to the specs outlined in this guide will ensure the longevity of this high-performance machine.