Royal Enfield 650 Twin breaks the land speed record


The Mid Life Cycles Royal Enfield Interceptor 650 Salt Racer has smashed the class record at the annual Speed Week run at Lake Gairdner, South Australia.

With first-time salt racer Charlie Hallam in the driver’s seat, the Interceptor 650 Twin, nicknamed SABRE, broke the four-year-old class record on each of its runs, leaving the new mark at 212.514km/h.

The Interceptor 650 was entered in Class M-F 650, for 650cc un-streamlined streamlined motorcycles running commercial unleaded fuel.

The old record of 119.961mph was set at Lake Gairdner in 2016

For Mid Life Cycles, the trouble-free record passes by the Royal Enfield Interceptor 650 reinforced the confidence the team has in the Royal Enfield 650 Twin engine package and traditional twin-loop steel frame that was carried over from the road bike to the racer, with minimal modifications allowed under the class rules.

For the DLRA, Speed Week 2021 was a triumph, run with precision and good humour by a dedicated band who kept their enthusiasm alive through all of 2020 and the state border snap lockdowns of recent months.


  • Cylinder Head: Significantly modified in the combustion chamber and ports. Valves taken out to maximum Ø of insert – inlet 1.5mm o/s head with standard exhaust. Valves are HRA Custom 6.5mm stems.
  • Camshaft: Ground from HRA Competition Profile 1286 Racing Camshaft Master. Has 106.25° inlet lobe centre and 103.5° exhaust lobe centre.
  • Throttle Body: Radiused thru to butterfly. Resulting butterfly remains at 34mm. Behind butterfly, choke sections have enlarged to 34mm. Inlet manifold has been matched/ported to suit.
  • Pistons: 11:1 forged pistons with standard swept volume of 648cc.
  • Conrods: Polished and shot peened.
  • Crankshaft balanced and standard balancing counterweight removed.
  • Gearbox extensively modified to reduce friction.
  • Fuel: 98 RON Fuel blended with other compounds for performance.


  • Ohlins Suspension
  • Modified and lightened alloy wheels
  • Pirelli Diablo Slicks front and rear
  • Custom swingarm lengthened by class-maximum 130mm
  • Custom-made front and rear sprockets, increasing gear ratio up to 40% from standard

About Author

Sean Carroll

Since joining ManSpace magazine and thanks to the 'In the Drink' section, I've progressed from a strictly Carlton Draught/ VB drinker to a Carlton Draught/ VB drinker that occasionally tries some super weird fruity things. I think we can call that progress.

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