Two-stroke racing has been living in a four-stroke world, and the death blow to the smokers in GP racing has already been dealt by the GP Racing Commission. With 2012 set to see Moto3 replace 125GP as MotoGP’s introductory class, the FIM has released the full technical specifications of the up-coming, 2500cc, single-cylinder, four-stroke racing class. Designed not only to bring GP racing into the 21st century, Moto3 also aims to end the Aprilia domination that’s currently taking place in the class’s two-stroke predecessor. With companies like Honda and KTM building complete Moto3 machines, and engineering firms like Kalex working on custom chassis for the prototype 250cc engines, there certainly looks to be a bit of diversity coming to the introductory GP series.

Another issue plaguing 125GP, and GP racing as a whole, is the rising costs of competing in the sport, as evidenced by the diminishing grid size in MotoGP. With Moto2 boasting a healthy 40 bike grid, Dorna and IRTA believe they have found the secret recipe to making prototype racing work, and have applied that methodology to the new Moto3 class. Unsurprisingly then, the vast majority of Moto3′s technical regulations concern keeping costs down, especially when it comes to the series’ claiming-rule style engine & parts restrictions. It’s actually interesting to read the level of detail the GP Commission has gone through in order to head-off attempts to circumnavigate the spirit of the cheaper four-stroke series, though we might point out that water always finds its level. Check out the full Moto3 technical regulations after the jump.

Tucked away in the Friday press release from the World Superbike Commission, along with other changes to the technical and sporting regulations, was the news that only sixteen bikes would be eligible to compete in Superpole qualifying.  In the 2010 season, the fastest 20 riders during the qualifying practices competed to move on to Superpole 2 and 3 to vie for the pole position for the Sunday races.

With the lower numbers of entries this past season, many if not sometimes all of the riders gained entry into the first Superpole session.  This coming, 2011, season, only the sixteen fastest riders will be in the first session of Superpole, with the slowest four getting knocked out of the running for Superpole 2 (allowing the fastest twelve to move onto Superpole 2).

The GP Commission has seen it fit to modify the rules for MotoGP, Moto2, and 125GP during the 2011 season, with perhaps the biggest alteration coming in the form of FP3 being reinstated to the Saturday schedule. For MotoGP, all practice and qualifying sessions will be returned to their one hour format (up from 45 minutes), which should make the sessions more useful for teams who has to scramble to make changes during the 45 minute format (Moto2 and 125GP will remain at 45 minute session). All the classes will see a three-wide grid format, which should be especially interesting in the compacted Moto2 field. All teams will also be allowed the use of generators on the starting grid.

Special for MotoGP, Dorna seems intent on limiting the level of electronics being used in the premiere class, and has inserted a provision that says that “in MotoGP, only the GPS provided by Dorna is permitted.” Currently MotoGP teams employ GPS systems that know which turn, and where in each turn, the bike is, and adjusts the bike’s suspension, engine map, and other settings for that corresponding section of the track.

While hyper-precise GPS systems could shave tenths of seconds off lap times, they also create an arms race in electronic controls, which in-turn raises the costs of racing. With Dorna supplying the unit, or failing to provide a GPS entirely (plot twist!), the use of such advanced electronics could no longer exist in 2011.

In addition to these provisions, Dorna has also requested applications for the 2012 Moto3 ECU supplier. Find the full release on the technical regulations and specifications after the jump.

Announced at Valencia this weekend, the GP Commission has finally released the details on the upcoming Moto3 class, which will replace 125GP racing in 2012. Based around a four-stroke 250cc single-cylinder motor with an 81mm maximum bore size, Moto3 aims to reel in the spiraling costs of GP racing, with numerous provisions that are designed to limit how much money teams and manufacturers can sink into the sport to buy victory.

Perhaps the biggest provision designed to help lower the cost of GP racing’s intro class is the spec-ECU rule, which sees teams limited on the level of electronics they can implement, and institutes a hard-cap on the engine’s maximum RPM (14,000 RPM). With multiple manufacturers able to offer motors and chassis for the racing class, Moto3 should be more open thatn the single-motor Moto2 series. The GP Commission has included a laundry list of other provisions, you can find them bullet-pointed after the jump.