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Just picked up a back-up bike from a forum member, an 18 MX. I thought the bikes were identical. However, after working on it for a few days I noted some interesting differences between my 17 MX. 1) The 4CS forks are about 1/2 inch longer. 2) The throttle is substantially faster, I'd say a...

I got tired of buying KTM front wheels when using KTM triple clamps so I counterbored 3mm off the rotor ears. Now it'll work with both triples (using 3mm spacers with the Alta clamps). There's still plenty of thread engagement.

Had a frustrating race weekend recently. The event was the TWMX "Slam Fest" at Milestone Raceway here in Socal. An event tailored made for the Alta as it's basically a 5 lap dash for cash. Lots of big time players typically show up and it was loaded this year. Mike and Jeff Alessi, Tyler...

My guess is that Alta has engineered an electronically variable battery configuration and integrated it as one of the main variables within the motor control system (throttle, maps, etc). The ability to instantly reconfigure about 20% of the cells within the battery from series to parallel or...

I've been sitting on this for almost 8 months and figured why not share it with the members. It's my personal assessment of my 2017 Alta MX (remember, it was written before the 18s were even announced). This installment is mostly from an engineers perspective. I have an equal but as of now...

Has anyone been able to buy a spare battery pack? I've been inquiring to my dealer for about 6 months and still don't have an answer about cost are availability. Since my pack was a very early unit and subject to TSB replacement I even had my dealer inquire about buying it back from Alta and...

My dealer informed me I need to take my 2017 (sn 049) in for updates. According to my dealer the bikes BMS will be re-flashed to prevent the charger from blowing residential home fuses (110/120v), the charge port harness will be replaced and the ENTIRE battery pack replaced (possibly changes to...