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Xtrac’s ‘P1113’ 4WD transmission has been designed specifically to cater for Rally cars operating within national rally championships, with a specification broadly in line with the FIA R5 regulations.

The ‘P1113’ transmission utilises Xtrac’s championship winning experience in S2000 and WRC applications to deliver a technically reliable and lightweight transmission solution built to its normal industry-leading quality standard. 


• 6 speed manual sequential gear change.

• 500Nm (368lbf ft) maximum engine input torque.

• Cast aluminium L169 casings.

• Mechanical type plate front and rear differentials with externally adjustable positive preload.

• 50:50 fixed front/rear torque split.

• Gearbox rear drive output shaft positioned for optimum vehicle and transmission package.

• Rear differential including Xtrac's patented rear drive disconnect system.

• Integrated oil system using an eccentric rotor pump.

• Provision for oil temperature, oil pressure and final drive speed sensor mountings.

• Provision for individual wheel speed sensor mountings.

• Gearbox weight approximately 55kg.

• Rear differential weight approximately 35kg.


• Light, positive sequential gear change.

• Optimised cluster to provide near instantaneous gear change.

• Easily removable cluster assembly for ratio changes.

• Easily accessible oil filter cartridges.

• Simple and efficient adjustment of differential preload.

• Designed for optimised drive shaft angularity.

• Cost effective, reliable, lightweight solution.


• Various driveline options.

• Prop shaft flanges to suit specific requirements.

• Various output flange options to suit drive shaft joints including AAR and plug in types. Integral speed sensor trigger as required.

• Various options for reverse gear interlock cable assemblies.

• Gear change position potentiometer.

• AP Racing clutch release.

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