According to the Shinko website the highest rating they have is W/168mph. Many have run them much faster though.
003 STEALTH RADIAL REAR
SPORT BIKE TIRE
The Stealth Radial's slick/dimple design is great for production racing, drag racing, or serious sport riding. Features include:
Soft compound for rapid warmup gives racing-slick-like performance
W speed rated (168 mph)
Aramid belted
DOT approved
Available in Ultra-Soft compound - great for drag racing and track use
005 ADVANCE RADIAL REAR
SPORT BIKE TIRE
A large block-type tread pattern makes the Advance an excellent all-around Radial tire, offering exceptional braking, cornering, and acceleration characteristics. Other features include:
Specially designed tread grooves help dissipate water efficiently on wet surfaces
Intermediate rubber compound
Aramid belts enhance high speed performance
W speed rated (168 mph)
DOT approved
006 PODIUM RADIAL REAR
SPORT BIKE TIRE
The Podium Radial's streamlined tread pattern reduces rotating resistance while improving water drainage. A smooth shoulder profile ensures superior grip and exceptional stability at all lean angles. Other features:
W (168 mph) or V (149mph) rated
Intermediate rubber compound
Aramid Belted
DOT approved
17 and 18 inch sizes available
009 RAVEN RADIAL REAR
SPORT BIKE TIRE
The Raven was specifically designed to meet the demand for a long life, high performance radial tire. Raven Radials provide superior riding comfort, while the tread compound gives high grip on both wet and dry roads. Other features:
Highest tread life of all Shinko sport-performance radials
W speed rated (168 mph)
Aramid belted
DOT approved
It's kind of confusing because all of the sizes have the 'ZR' in their names, like 190/50ZR17.