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The now newly named Alta Motors is ready to announce its production machines for the 2015 model year, and first up is the company’s off-road model: the Alta RedShift MX. Designed to take on the toughest gas-powered lites-class motocross bikes on the track (250cc four-strokes), the RedShift MX boasts some impressive electric figures as well.

With 40hp on tap, from only 11 pounds of motor, the RedShift platform has the most powerful motor per pound, anywhere. Add that to the fact that Alta says the RedShift MX tips the scales at 251 lbs, though feels lighter once it’s underway — a known benefit of electric motorcycles.

Revving to 13,750 rpm from Alta’s proprietary motor, the RedShift MX is good for 2 hours of “recreational” riding. For riders that want to keep going longer, Alta has designed the battery pack to be swappable, in about 10-15 minutes with two sets of hands working. This also means that future battery pack upgrades will be available as new battery tech comes to market as well.

We should probably just go ahead change our name to Dirt & Rubber already, as A&R is on an off-road kick today. We’ve shown our fair share of slow-motion MotoGP videos from our friends at Red Bull, and today the brand that gives you wings has a treat for you dirt bike enthusiasts. Incorporating some great dirt track shots with James “Bubba” Stewart talking about the basic theories of motorcross racing, Red Bull has a nice little promo video here for Bubba and the Yamaha squad. Learning patented tips like “turn the bike like no other and get it done,” and “the Bubba scrub” we expect our street-leaning selves to be riding at JS7‘s level in no time at all. Video goodness after the jump, and be sure to note the slow-mo exhaust puffs at the 1:50 time marker.

After several months of testing and refining the BRD RedShift electric motorcycle, pricing and technical specifications from BRD Motorcycles has just graced our inbox. Wanting to make sure the BRD RedShift SM & RedShift MX lived up to the company’s hype, BRD has been reluctant to quote exact figures and prices until the San Francisco startup was confident it could back up those announcements with actual product performance. True to our prediction at the time of the BRD RedShift SM’s launch, the MX version will come with a $14,995 price tag, while the SM supermotard will tack on an extra $500 for a $15,495 MSRP.

Making 40 peak-horsepower, the BRD RedShift touts 250cc bike specs, especially with its 260/265 lbs (SM/MX) curb weight for street use (headlight and switchgear). In racing trim, both the SM & MX shed an additional 10 lbs. Because of the interest being generated in the police-style model (RedShift PD), BRD will make the model available with its more robust tail section, hard luggage, and more powerful electrical system for powering electrical components. These added components add an additional 35 lbs to the RedShift’s base weight, though the PD model is expected to be the company’s best selling model, as public and private fleet vehicles are increasingly pressured to include electrics into their vehicle pools.

A part of Brammo’s announcement that it will be entering the electric dirt bike scene, the Brammo Engage is the cornerstone of the Ashland, Oregon company’s off-road line. Featuring the S.M.R.E. designed Integrated Electronic Transmission (IET), Brammo is not only getting into the dirt bike and supermoto scene with the Engage (going squarely after players like Zero and Quantya), but is raising the ante by offering a six-speed transmission specifically designed for electric motors.

Husqvarna has released pricing for its 2010 line-up of cross country, enduro, motocross and supermoto motorcycles. The big news for 2010 is that there will be an upgrade to Kayaba 48mm forks across the line. Also, the 2010 line-up will feature more flexible plastic, stronger and lighter wheel hubs (front and rear), and other tweaks on a per model basis.

We especially enjoy the SM510 for its happy merger of hooliganism meets serious racing machine. It is so choice. If you have the means, we highly recommend picking one up. Pricing after the jump