3MO TXL 6 Speed 600 Nm 4WD Sequential Gearbox Specifications

3MO TXL 4WD SEQUENTIAL GEARBOX

Torque 600 Nm / 450 lb-ft

4WD 600 Ultralight 6 Speed

 

OVERVIEW

The lightweight 3MO TXL 6 Speed 4WD Sequential Gearbox suits racing engines using longitudinally orientated, front or mid mounted engines, connected to a four wheel drive differential setup. Race car owners spend a lot of time and money taking weight out of their cars, so it makes no sense adding that weight back with a heavy or over specified gearbox that’s not fit for purpose. The transmission’s compact size means driveline tunnels don’t usually need to be modified making fitting simple and easy in a wide range of situations. If you have 600nm or less, then the TXL lightweight and super quick shifting sequential gearbox is probably the right choice for you.

This versatile 3MO sequential gearbox has a wide range of 35 gear ratios and 3 driven shaft ratios to choose from ensuring drivers can specify the gearbox at ordering time for their unique needs – in other words; there’s a gear ratio for almost every situation. The TXL 6 Speed Sequential Gearbox is capable of handling engine torque of 600 Nm or 450 lb/ft with 1st gear @ 3.08 and 0.97 input drive (25 x 24) i.e. 2.98. If a taller 1st gear ratio of 2.92 and 0.87 input drive (23 x 20) i.e. 2.54 are chosen; then torque capability is reduced to 520 Nm or 385 lb/ft

There are three inspection ports to allow for easy checking of the dog rings without disassembling the gearbox, which saves workshop time.

With proper shift technique and lubrication, dog rings should be good for 60 hours of racing or 8400 km / 5250 miles. Likewise, gear positions 2 and 3 are rated for 50 hours or 7000 km / 4375 miles, with gear positions 4, 5 and 6 being rated for 75 hours or 10500 km / 6560 miles

APPLICATIONS

Circuit – Rally – Hillclimb – Off Road

BENEFITS

Reliability – Lightweight – Compact Size – Wide Range of Ratios – Flexible Fitting

GEARBOX IN ACTION

COMING SOON

SPECIFICATIONS

  • 6 or 5 speed 4WD sequential gearbox with straight cut and dog engaged gears 
  • Maximum engine torque: 
    – 600 Nm / 450 lb-ft
    – 520 Nm / 385 lb-ft (1st gear 2.92, constant drive 0.87 i.e. 2.54 )
  • 89mm / 3.5″ shaft centreline 
  • 20mm / 0.787″ gear tooth width (1st to 3rd) & 17mm / 0.669″ (4th to 6th)
  • Gear ratio options     – 2 input constant drive ratio options 
        – 35 gear ratios 
  • Input shaft length and spline to suit customer requirements
  • Range of bellhouses for most of the popular engines 
  • Splash lubrication
  • 3 Dog Ring inspection ports
  • 0-5V gear position sensor 
  • Lock out cable for reverse
  • Weight: 38 kg

RATIOS

Input Drive RatiosGear RatiosGear Position
 TeethRatioTeethRatio1st2nd3rd4th5th6th
Short25 x 190.76012 x 373.083     
Medium23 x 200.87012 x 352.917     
Long25 x 240.96013 x 342.615     
   15 x 362.400    
   13 x 312.385    
   14 x 332.357    
   13 x 302.308    
   14 x 322.286    
   13 x 292.231    
   14 x 302.143    
   15 x 322.133    
   14 x 292.071    
   16 x 322.000    
   17 x 331.941    
   15 x 291.933    
   17 x 321.882    
   17 x 311.824    
   15 x 271.800    
   17 x 301.765    
   18 x 311.722    
   17 x 291.706    
   18 x 291.611    
   16 x 322.000   
   15 x 291.933   
   15 x 271.800   
   18 x 311.722   
   16 x 271.688   
   17 x 281.647   
   18 x 291.611   
   17 x 271.588   
   17 x 261.529   
   18 x 271.500   
   17 x 251.471   
   18 x 261.444   
   19 x 271.421   
   18 x 251.389   
   20 x 271.350   
   19 x 251.316   
   21 x 271.286   
   21 x261.238   
   22 x 271.227   
   19 x 231.211   
   21 x 251.190   
   20 x 231.150   
   23 x 261.130   
   20 x 221.100   
   21 x 231.095   
   28 x 301.071   
   28 x 291.036   
   23 x 231.000   
   25 x 240.960   
   32 x 300.938   
   23 x 190.826   

ACCESSORIES

NOTES

  • A minimum 0.7″ master cylinder can be installed on your original clutch pedal setup.
  • An adjustable clutch pedal stop is needed as the hydraulic release bearing does not have an output stop.
  • Depending on your application an oil cooler may be recommended.  A 13 row cooler measuring 210 x 98 x 50mm with AN6 inlet / outlet fittings will work well.
  • Must use 75w140 fully synthetic lubricant – Motul Gear Competition is highly recommended
  • Oil Capacity is 0.9 litres or 1.06 quarts excluding oil lines, pump and cooler