S4 Sequential


Mendeola Products
MD4-2D  4 speed transaxle
MD4E   4 speed transaxle

MD5-2D 5 speed transaxle
S4 Sequential shift 4spd
S4D, Durable Sequential 4spd
S5, Sequential 5spd
S5D, Durable Sequential 4spd
HD4 Heavy Duty 4spd Sequential
Gear Ratio Calculator

U-Joint Axles- Disclaimer
Shift Linkage Adjusting

MD4-2D Main bearing support
Clutch linkage upgrade, Stage 2/3
CV Tips
CV Assembly
CV Clocking
Grease Needle

VW Transaxles
VW Bus 091, 002, Type 1

Mendeola components
MD Case
MD4 Ring Gear
MD4 Carrier
MD4-2D Pinion Gear
MD4E Pinion Gear
MD5 Pinion Gear
MD 930 CV stubs
MD 935 CV stubs

HD4 Carrier and end gear
HD4 Ring and Pinion
HD4 Case Front
HD4 Differential Case Side
S4 Case Front
S4 Differential Case Side

Sandrail Applications
Transaxle selection chart
2 seat mid-engine with S4

Links of interest
Raw Motorsports
Weddle Industries
DeJong Sandcars
Funco Motorsports
Kennedy Engineering
Master Shift
Mendeola Transaxles

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S4 sequential shift transaxle

Simplicity and extra durability, that's what the S4 delivers.  No more H pattern, just pull to shift up, push to shift down, just like a motorcycle.  This exciting new transaxle fills the void for many high powered off-road applications. It goes beyond the capabilities of our MD4-2D in many ways, yet it fits the same chassis mounts. 

If you're considering an upgrade from an MD4 some minor spacer work will be needed on your motor mounts to raise the motor slightly.  With the larger transmission gears of the S4 the input shaft had to be raised, which in turn raises the bell housing about 3/4" higher compared to the MD4 transaxle.  The other area to confirm is the clearance on the top of the transmission case.  Although the differential area on the S4 is the same height as the MD4, the S4 transmission area (the right 50% of the picture below) of the case is about 2" higher than the MD4 case.

The other major difference on the S4 is the shift linkage.  Since the S4 uses cables to shift, versus a shift shaft on the MD4, you should make sure you have the routing of the S4 shift cables planned out for your adaptation.

Other than the caveats noted above, an S4 transaxle will bolt up to the same mounts of the MD4 box. 

Click areas below for close-up view


bullet Cable activated shifter
bullet 4.57 ring and pinion
bullet Dog ring engagement-removable face plates
bullet All new EN36C gear sets - 1" face widths, much larger shaft centers
bullet Dual disc 1 3/16 - 18 clutch packs
bullet 935 or 930 drive stubs
bullet Uses same chassis mount pattern as the MD4 (3/4" difference in engine height)
bullet Cooling pump, optional
bullet Up to 750 HP range, sand applications
bullet A perfect match for LS1 or Northstar V8s

Download S4-S5 spec

Electric paddle steering wheel shifters are available to bolt right up to the S4 from PBS Engineering. This is the same kind of shifter that IRL and Formula One cars use to keep their hands on the steering wheel.  This is the ultimate accessory for your car.


Transmission ratio choices:

1st Gear 2nd,  3rd, & 4th (All Interchangeable)
3.27    3.09    2.91 2.21   2.14   2.08   1.93   1.86   1.75  

1.67   1.59  1.56    1.50   1.44   1.37  

1.32   1.26   1.20   1.14    1.10   1.00  .096


Ring & Pinion choices:

     5.13 R *
     5.43 R *

* Honda and Corvair reverse rotation



This 2 seater is powered by a mid-engine mounted LS1 with supercharger, hooked up to an S4 transaxle.   This application would use a reverse rotation ring and pinion set.  This is an awesome looking car.  Seems like all the ultimate sandcars have Mendeola transaxles.

California Performance   - Temecula, CA  951- 699-8898
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