2026 Italkart Supersonic KZ Shifter 30/32 mm Chassis

This chassis has dominated here in the Northwest and beyond. Italkart also placed 1st at SKUSA SuperNats in 2024! Winning the premier race in 2024, and following that up with 2nd and 4th place at the 2025 ROK Cup USA event in Vegas - Italkart is a proven package and one of the best supported chassis here in the US. If you're serious about winning, this is the chassis! Italkart has always been known as the brand to have for the Shifter class, and the Supersonic has been very popular with it's hybrid mix of 30mm and 32mm tubing. Highly recommended for the Shifter Heavy class, this chassis can put the power down! 

Comes with 10° spindles, hard axle, and 50 x 125mm rear hubs. 30/32 mm chassis.

New features for 2026:

• "Floating" front belly pan for better chassis flex
• Adjustable lower seat mounts (better fit reduces seat cracking)
• Full floating front rotors with 4 piston calipers
• Longer axle hangers for more rear grip
• Solid aluminum pedals - less flex, and better feel
• Fuel line and data wire holders

*Please note, there is an optional $350 charge for professional assembly and race setup (add $285 for Shifter engine installation).
*The Supersonic is a 30mm/32mm frame (if you're looking for full 30mm, go with the Rapido V1-B model)
*We also offer trackside support and chassis setup for your first day at the track with your new kart - $250 (contact us for details)
*Shipping charged separately, based on location ***Please note the shopping cart system will only charge about $50, but shipping of karts is usually $250 to $500. Contact us for options, we have good affordable air freight options as well as truck.***
*No sales tax

Italkart is one of the only chassis manufactures that does not mass produce chassis model's. This allows us to pay special attention to each frame that goes through our production line like its one of our very own. Most importantly, we sell what we race.