Ultra Duty Transaxle-Off-Roadings' first Sequential Gearbox

The Mendeola HD4 is the strongest racing transaxle on the planet. In sand buggy trim it is rated at 1300 to 1600 HP, 800 to 1100 lbs. ft. torque. The off-road racing platform will handle 650 to 850 HP, 500 to 750 lbs. ft. torque. It is currently being run in everything from Baja to the Dakar Rally. It was the unit run in the Marking/Mendeola Unlimited Class 1 Car, which also won the SCORE 2004 Unlimited Class 1 Championship. This vehicle captured the Toyota True Grit Award as well. It was the only open class car to complete all 5 seasons' races.

If it's sheer stregth and unmatched reliability you're after, the HD4 delivers in spades. No other gear system can match it. By utilizing the S4's activating system in its new shifter housing and providing a bearing bulkhead for the gear stack, the HD4 uses other transaxles for "target practice".

HD4 Transaxle Options:
· Series 30 Drive Flanges
· 935 Drive Flanges
· Chevy V8 SBC bell housing
· Howe Power Steering Pump

Full size torque converter coming soon!
Applications
Max Tire Size
·SCORE irs Based Trophy Trucks   Kevlar side-walled projects of any brand.  
·Ultra-Duty Pre-runner      
·SCORE Unlimited Race Cars   Paddle tires from MARS!  
·Blown Sand Buggies      
   
 
Max Engine HP
with Torque Converter  
Max Vehicle Weight
 

 ·Truck 800

950  
5,500 lbs - 5,800 lbs
 
·Race Cars 800 950  
·Pre-Runners 875 1000  
Max HP
·Sand Buggy 1400 1750  
375
   
     
       
1st Gears   Ring& Pinion
3.00   2.88   2.71   2.58        
   
2nd,3rd, 4th & 5th Gears  
2.18   2.06   1.95   1.89   1.87   1.84
 
1.80   1.75   1.70   1.67   1.62   1.57
   
1.50   1.45   1.44   1.35   1.29   1.22
   
1.20   1.17   1,14   1.12   1.09   1.04
 
1.00   .83