Synergy Rebel S18 – Junior / Senior Rolling Chassis
SKU:SYN-REBEL2025
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About this Product
The Synergy big kart. A 30 mm chassis with a 50 mm axle, built by Birel ART in Italy to Synergy's specification and set up in the UK. One kart for everything from Junior through to Senior non-gearbox classes — quick straight out of the box and fully tuneable as the driver progresses.
Spec it with an engine, seat and extras in the Synergy builder →
What you get as a rolling chassis
- Synergy Rebel S18 frame, 30 mm tubing, 50 mm rear axle
- Synergy bodywork and sticker kit fitted (nose, Nassau, side pods, rear bumper)
- Seat, steering wheel, pedals, brakes, hubs, wheels — everything except engine, mount and tyres
- Pre-delivery check and baseline set-up
Engine options
- IAME X30 Junior or Senior
- Rotax Max Evo Junior or Senior
Buy an engine with the kart and we fit it, run it in, set the chassis to a sensible baseline for your class, size the seat and pedals to the driver and do a full handover at Whilton Mill — included.
Upgrades
- Tillett T11 VG seat in place of the standard seat
- Alfano 7 data, Senzo trolley and tool box at 10% off with the kart
Who it's for
- Juniors stepping up from Cadet
- Senior racers in IAME or Rotax classes
- Anyone who wants a European chassis with the manufacturer's UK importer behind it — every Synergy and Freeline part is on the shelf at Northampton
Price is for the rolling chassis. Delivery by pallet nationwide, or collect from our shop at Whilton Mill Kart Circuit.




Find your part on the kart