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Drive is fed from the forward mounted ratio gears through a pair of quick change drop gears, mounted at the rear of the transmission, into the final drive spiral bevel gear set.
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This unit offers the proven reliability of Xtrac's high quality internal components, in a layout designed for ease of access and maintenance.
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This is a mid-engine longitudinal transaxle and has been developed from Xtrac's successful and durable '105' Sportscar gearbox and is suitable for the Grand American Daytona Prototype Series. Drive is fed from Le Mans proven gear ratios mounted behind the axle centre line, through a final drive hypoid spiral bevel gear set. This allows the engine to be mounted low in the car, thus helping weight distribution without adversely compromising drive shaft angles, or efficiency. Value engineered to meet strict cost constraints within this formula, this gearbox offers the highest quality at a cost effective price. |
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A transverse six speed sequential racing gearbox, primarily designed for use in FWD Touring Car (BTCC) and Rally Car applications. The unit has been utilised as the specification gearbox for the British Touring Car Championship since 2001. The 406 was designed with ease of servicing in mind and ratio changes are accomplished on the bench after the ratio cluster has been removed as one unit on its cluster plate. Value engineered to meet strict cost constraints within this formula, this gearbox offers the highest quality at a cost effective price.
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The '407' is the low torque configuration in this new range of high performance in line gearboxes. This range also includes both mid and high torque versions, designed for sports car applications. Xtrac have used their knowledge and experience to produce this high quality yet lower priced range of gearboxes that shares common parts across the range. This enables spares to be both competitively priced and readily available.
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A transverse six speed sequential racing gearbox, primarily designed for use in FWD Touring Car and Rally Car applications. The unit is a re-package of the successful '406' FWD Touring Car gearbox, which has been utilised as the specification gearbox for the British Touring Car Championship since 2001. The new design gives a lower center of gravity, and the encapsulating cluster casting makes it easier to remove the cluster for ratio changes. Value engineered to meet strict cost constraints within this formula, this gearbox offers the highest quality at a cost effective price.
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A transverse six speed sequential racing gearbox, primarily designed for use in FWD Touring Car and Rally Car applications, utilising higher torque engines. It is the spec. gearbox for the Argentinean TC2000 series. The unit is a re-package of the successful ‘416’ FWD Touring Car gearbox, which has been utilised in the ETCC and WTCC. The new design gives a lower center of gravity, and the encapsulating cluster casting makes it easier to remove the cluster for ratio changes. Customers using the 426 have secured class wins in races such as the Nürburgring 24 Hours. A recent variant has been made available for RWD GT2 & GT4 applications.
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The '427' is the mid capacity configuration in this new range of high performance gearboxes. This range also includes both higher and lower torque versions, designed for both sports car and touring car use respectively. Xtrac have used their knowledge and experience to produce this high quality yet lower priced range of gearboxes that shares common parts across the range. This enables spares to be both competitively priced and readily available. |
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The '437' is the high capacity configuration in this new range of high performance gearboxes. This range also includes both mid and low torque versions, designed for both sports car and touring car use respectively. Xtrac have used their knowledge and experience to produce this high quality, yet lower priced range of gearboxes that shares common parts across the range. This enables spares to be both competitively priced and readily available.
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By adopting the basic “Racecar” gearbox layout and applying it to a Motorcycle cluster, Xtrac are able to offer a gearbox which is simple to work on and offers the ultimate in tuning of ratio selection. With many years of Championships in the AMA Supercross and Motocross series, Xtrac has a wealth of experience to which they have utilised to produce this outstanding Moto GP gearbox. |
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The 516 makes use of reduced center distance F1 derived gear ratios to minimise the size and weight of the gearbox and to minimise inertia. The gearchange system incorporates the latest polynomial barrel track design and low inertia gearchange rack to improve gearchange response and driver feel. The low positioning of the gear cluster enables easy removal from the car under the chassis rail, and lowers the centre of gravity. The gear cluser is fully exposed when removed from the gearbox allowing quick inspection, and easy access for ratio changes.
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The gearbox specification meets all of the requirements of the FIA S2000 homologation regulations and has been approved for use in S2000 championships by the FIA. To meet the FIA’s requirements Xtrac has achieved the lowest possible costs, whilst ensuring a technically reliable and lightweight transmission solution built to their usual industry-leading quality standards. |
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The project involved the design, manufacture and assembly of a rear mounted, transverse gearbox. The resultant design allows gear cluster changes without disassembly of the rear of the car. Gear changes are performed using Xtrac's positive and reliable sequential gearchange mechanisms. Xtrac's legendary record for reliability and performance was built on multiple winning Le Mans products like this.
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Designed and manufactured for GT1 – GT4 Sports Car applications. The 600 gearbox is a customer specification longitudinal Transaxle utilising many components from previous Le Mans winning Xtrac gearboxes. Xtrac’s legendary record for reliability and performance was built on multiple winning Le Mans record from products like this. |
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Xtrac’s ‘633’ 4WD transmission has been designed specifically to cater for Rally cars competing under the FIA WRC & Super 2000 regulations, in series such as the Intercontinental Rally Challenge (IRC) and WRC championship WRC & S-WRC. The gearbox specification meets all the requirements of the FIA S2000 / WRC homologation regulations and has been approved for use in S2000 / WRC championships by the FIA. To meet the FIA’s requirements Xtrac has achieved the lowest possible costs, whilst ensuring a technically reliable and lightweight transmission solution built to its normal industry-leading quality standard. |
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The 1046 gearbox is a high performance front wheel drive touring car gearbox that has been designed specifically for the British Touring Car Championship and is suitable for the World Touring Car Championship. The 1046 makes use of Rally derived gear ratios with minimised size and weight to reduce inertia. The gearchange system incorporates the latest polynomial barrel track design and low inertia gearchange rack to improve gearchange response and driver feel. The gears have been re-ordered to allow the overlap of barrel track profiles. The low positioning of the gear cluster enables easy removal from the car under the chassis rail, and lowers the centre of gravity. The gear cluster is fully exposed when removed from the gearbox allowing quick inspection, and easy access for ratio changes.
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Xtrac have designed and developed a new differential for the Porsche 911 GT3R, as used by Dick Barbour and tested by Porsche at Weissach. We are able to offer this unit direct to customers for use in the 911 GT3R. The '213' Differential is an adjustable Negative Pre-load Differential (ANPD). Under light acceleration or deceleration levels, the differential will remain open, but as the torque transmitted increases, the force separating the side gears will increase, overcoming the negative pre-load effect of the Belleville springs and lock up the friction discs and plates. The characteristics of the differential can be tuned by changing either the ramp angles on the side gear rings, or adjusting the amount of negative pre-load via the adjuster plates. The adjustment can be carried out either on the bench or in the car. A small machining modification is required to allow the unit to fit into the existing Porsche casing. Xtrac can modify the casing or supply details for customers to carry out the machining themselves.
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 247
Heavy Duty DifferentialThe 247 Heavy Duty Differential is an independent unit designed for either front and/or rear drive applications, typically for Cross Country Rally Raid vehicles and Sportscars. Universal mountings allow the unit to be mounted for all shaft rotations and positions (front and rear). The oil system has been designed to operate in all possible orientations. These features combined with the unit's high quality, low cost attributes make this product ideal for a wide variety of endurance type events.
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The 407 Medium Duty Differential is an independent unit designed for either front and/or rear drive applications, typically for Rally, light Cross Country Rally Raid vehicles or Touring cars. It is the perfect differential to be used in conjunction with Xtrac's in-line 407 Sequential Touring Car gearbox. The unit incorporates high quality, low cost features making the product particularly suitable for Touring Car type events. For higher torque and more arduous environments, the heavy duty Xtrac 247 differential can be utilised.
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The ‘'522'’ super heavy duty differential is an independent unit designed for either front and/or rear drive applications, typically for cross sountry or rallyraid vehicles. Universal mountings allow the unit to be orientated for all shaft rotations and positions (front or rear). The oil system has been designed to allow operation in all orientations. These features combined with the unit’s high quality, low cost attributes make this product ideal for a wide variety of endurance type events.
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Xtrac’s ‘532’ 4WD transmission has been designed specifically to cater for Rally cars competing under the FIA Super 2000 regulations in series such as the Intercontinental Rally Challenge (IRC) and WRC support championship the S-WRC. The rear differential specification meets all the requirements of the FIA S2000 homologation regulations and has been approved for use in S2000 championships by the FIA. To meet the FIA’s requirements Xtrac has achieved the lowest possible costs, whilst ensuring a technically reliable and lightweight transmission solution built to their usual industry-leading quality standards.
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Xtrac’s ‘633’ 4WD differential has been designed specifically to cater for Rally cars competing under the FIA WRC & Super 2000 regulations, in series such as the Intercontinental Rally Challenge (IRC) and WRC championship, WRC & S-WRC. The rear differential specification meets all the requirements of the FIA S2000 / WRC homologation regulations and has been approved for use in S2000 / WRC championships by the FIA.. The rear differential specification meets all the requirements of the FIA S2000 homologation regulations and has been approved for use in S2000 championships by the FIA. To meet the FIA’s requirements Xtrac has achieved the lowest possible costs, whilst ensuring a technically reliable and lightweight transmission solution built to its normal industry-leading quality standard.
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The 420 in car gear lever is designed to be a low cost solution for use with Xtrac's sequential gearboxes. The lever supports universal installation, and is designed to link to gearboxes installed in the front or rear of the car, with the linkage mounted above or below the transmission tunnel. Included with the lever is a reverse gear detent lift handle. The lever is offered in two versions, a basic specification for manual shifts, and a power shift version with micro switches to provide an input signal to the ECU.
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Gear Lever Assembly
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Xtrac sequential gearboxes are generally fitted with sensors so they can be integrated into the cars management and telemetry systems. This is a new stand-alone product that can be fitted to our sequential transmission. It measures the gearchange barrel position to display the current selected gear to the driver. The device uses a state of the art microcontroller technology to give a reliable, lightweight unit that displays the selected gear on a high intensity LED display. The display incorporates a light sensor which automatically adjusts the display brightness to match the ambient light conditions, ideal for endurance racing. The unit is simple to install. All that is required are for connections to be made to the 12v vehicle supply and ground. The connections to the potentiometer are made using the high quality wiring harness supplied, which uses environmentally sealed automotive connectors. In addition, the unit is fully reverse polarity protected and cannot be damaged by incorrect wiring.
Xtrac are an official partner of Megaline and can offer their well proven Assisted Gear change System (AGS) as part of a comprehensive package to include Xtrac designed and developed peripheral components and full test and event support. We are also able to offer support on other pneumatic,
hydraulic and electrical systems.
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