i think the outvalves in the 15R are not titanium... and the 1 ring piston ring is thicker than the SL engines pistonring... i guess for wear reasons... i see little to suggest that the R engine is 'detuned'...
both intake & exhaust valves are titanium on the 2015R - here:
DUCATI PANIGALE R
Racing DNA
Created for the enjoyment of the most demanding enthusiasts, the Panigale R has been developed through the experience of Ducati in the World Superbike Championship. Fitted with a race-spec version of the Superquadro 1198 cm3 engine which meets displacement restrictions enabling it to compete in world and national Superbike and Superstock series, the Panigale R incorporates numerous features adapted specifically for the racetrack.
Titanium exhaust valves and 2 ring pistons have been added to the Superquadro engine, which was already fitted with titanium intake valves and rods. The pistons’ short-skirt design and the use of only 2 rings (compression ring and oil ring) reduce their overall mass and friction. Added to this is an extremely lightweight crankshaft, which is balanced thanks to tungsten inserts in the counterweights, and dedicated camshafts which allow the Panigale R to reach a maximum power level of 205 hp at 11,500 rpm and a torque level of 136.2 Nm at 10,250 rpm.
The Panigale R is also fitted with a clutch designed specifically for racing as well as a series of technical features that ensure maximum performance even after long distances, considering the strict regulations on power unit quotas in races reserved for modified production bikes.
Reinforcing the incredible level of performance of the electronic kit, the Panigale R has been fitted with the same elements used on the 1299 Panigale. It has, for instance, the Inertial Measurement Unit (IMU) which commands the Cornering ABS, Ducati Wheelie Control (DWC), Ducati Traction Control (DTC), and Engine Brake Control (EBC), along with an automatic calibration system for tyre dimension and final transmission ratio. In addition, it includes the Ducati Data Analysis+ GPS (DDA+ GPS) system with lean angle visualization. The impressive provision of electronic devices also includes auxiliary buttons on the handlebars, as on race bikes, to regulate the DTC, DWC or EBC systems rapidly during track use.
The Panigale R is also fitted with Ohlins mechanical suspension and it has a steering angle of 24° and a swingarm pivot that can be adjusted among 4 positions. In addition it has dedicated steering offset geometry which advances the front axle by 5 mm compared to the 1299 Panigale and the 1299 Panigale S (with relative increment of the wheelbase distance from 1,437 mm to 1,442 mm), in order to further increase stability particularly in conditions of extreme track riding or racing.
The Panigale R is fitted with a number of parts made in carbon fibre and, thanks in part to the use of the approved Akrapovic titanium silencer and the extremely lightweight lithium ion battery, the Panigale R weighs 6 kg less than the 1199 Panigale R.
Panigale R
- Colour scheme
1. Special “R” colour scheme with black wheel rims
- Features
1198 cm ³ engine with Superbike derived components
New electronic kit with Inertial Measurement Unit (IMU)
Riding Modes (Race, Sport, Wet)
Ducati Safety Pack (Cornering ABS, DTC)
DWC, EBC, DQS up/down
Automatic calibration system of the tyre size and final drive ratio
Ohlins mechanical suspension (NIX30 fork, TTX36 shock absorber)
Lightweight forged aluminium wheels
DDA+ GPS and visualisation of lean angle
Li-ion battery
Auxiliary buttons to adjust DTC, DWC, EBC
Adjustable Ohlins steering damper
TFT instrumentation with indicator of lean angle
Akrapoviç homologated full titanium exhaust