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CASTINGS MANUFACTURED OF  AIRCRAFT QUALITY A356 T6 CAST ALUMINUM ALLOY
BASED ON  3.35” /85mm SHAFT CENTERS
4 SPEED PROPRIATERY 1.100” /28mm   WIDE GEAR SETS WITH 8 LUG DOG ENGAGMENT
5 SPEED PROPRIATERY .800” /20mm   WIDE GEAR SETS WITH 6 LUG DOG ENGAGMENT
PROPRIETARY .748”/19mm WIDE REVERSE GEAR
10.00”/254mm FORGED 9310 VAR SPIRAL BEVEL RING & PINION SET
AVAILABLE IN MID-ENGINE OR REAR ENGINE MODELS
4.13, 4.57, 4.63, 4.86, 5.43, STANDARD ROTATION, or 5.13, 5.43 REVERSE ROTATION RING AND PINION OPTIONS
FLANGE TO FLANGE DISTANCE 9.00”/228.6mm
6 BOLT 4130 PINION BEARING HOUSING
BILLET 6061 ALUMINUM SIDE COVERS
EARLY 4 BOLT VW/ PORSCHE BELLHOUSING STANDARD/ WITH CENTER MOUNT STARTER
OPTIONAL CHEVROLET BUTTON BELLHOUSING AVAILABLE
OPTIONAL 180 DEG. ROTATION CHEVROLET BUTTON BELLHOUSING AVAILABLE (SITS PINION ABOVE CRANK CENTERLINE)
UTILIZE SINGLE OR DUAL DISC AFTERMARKET EARLY VW/ PORSCHE  8.00"/200mm OR 9.00”/228mm CLUTCH SYSTEM
1.8125” / 46.0mm SPLINE INPUT SHAFT MADE FROM AEROSPACE GRADE 4130 HYBRID MATERIAL 
4.500”/114.3mm DIFFERENTIAL CARRIER BEARINGS
 BILLET CROM-MOLY DIFFERENTIAL HOUSING
 HYBRID DANA 60 STRAIGHT BEVEL GEAR STYLE OPEN DIFFERENTIAL GEARSET
LIMITED SLIP SALBURY STYLE DIFFERENTAL
SPOOL DIFFERENTIAL
POWER TRAX LOCKER
930 OR 935 OUTPUT FLANGE OPTION
EXTERNAL OILING PUMP CAPABLE
6.5 QUARTS OIL CAPACITY

 S4 | S5 Transaxle Options:
· MD series diff (10 or 12 race cars)
· Reverse rotation 4.86, 5.14, and 5.42 ring and pinion