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Aixro XR-50 TaG w/ Standard Apex Seals & PVL Ignition

Aixro XR-50 TaG w/ Standard Apex Seals & PVL Ignition
SKU: Karting:9900115
Retail price without tax: $6,380.00

The Aixro XR-50 continues to be a revolution in the karting world. There has never been such a combination of performance, drivability and reliability in this sport before. Here's why:

The XR-50 is a 4-stroke rotary engine working on the Wankel principle and consequently has no oscillating masses due to an eccentric shaft and rotor turning at 1/3 shaft speed. During each full rotation of the shaft one of three chambers is ignited. As all the moving mass is balanced, this type of engine layout is free from vibration, extremely powerful, compact in size and produces low emissions.

The XR-50 is a carburetor engine with mixture lubrication at a ratio of 50:1, but unlike in 2-stroke engines all oil is combusted without residue.  Fresh gases initially flow through one end plate, stream through the rotor, bearings and shaft cooling and lubricating, before passing into the combustion chamber through the opposite end plate. At ~5500 rpm a negative-pressure controlled butterfly valve opens a second port feeding additional gases directly into the combustion chamber.  These cold gases give rise to the enormous power of the XR 50. The untypical processes in the engine result in very long control times that positively influences exhaust gas values, which are typically under 1% of comparable 2-stroke units and equal to the best 4-stroke levels.

Over the past years the XR-50 has proved both its performance and reliability. But as good is never good enough, the engine is continually improved. With this, the Aixro XR-50 has once again been completely redesigned and now comes with a digital ignition system, which has been developed in cooperation with German ignition specialist PVL.

The XR-50 with its PVLvariable ignition timing and integrated start support has resulted in significantly improved starting performance due to higher spark quality and intensity yielding increased bottom end power. The ignition is self-sustaining, so it does not require a battery to start and run, but if a battery is aboard the integrated alternator will supply 50W regulated current to keep the battery fully charged.

  • Please note these engines require the use of Motul Kart GP 2T Racing Oil which is the only oil recommended to use with the XR-50

Technical Specifications:

  • Type: 4- stroke single rotor rotary engine
  • Power: 48Hp @ 8750 RPM
  • Weight: 37.5 Lbs
  • Torque: 29 Lb/Ft @ 7500 RPM
  • Chamber Volume: 294 ccm
  • Max RPM: 11,000
  • Ignition: PVL Fire 650
  • Drive: 1/2 in chain type 428


  • Electric Start Package (TaG) version
  • Dual Inlet intake w/ vacuum control
  • Bing float carburetor
  • K&N air filter
  • 3-piece exhaust w/ manifold and exhaust springs
  • Standard engine mounts (Ø32mm x 92mm)
  • Ignition with starter support
  • 50W alternator

Note: A battery is required for the electric start and is not included. We recommend aThunder Power RC lithium polymer (Li Po) Pro Power 30C (33mAH 14.8v 4 cell  battery)

Download Owners Manual, Parts List and Warranty PDF from our Support site:

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