DANA 44 TECH SPECS
| DYNATRAC JK TRAIL-SERIES 44 | MOPAR JK RUBICON MODIFIED FOR TJ | DYNATRAC PROROCK 44 AXLE (FRONT ONLY) |
| RING GEAR DIAMETER (FRONT, IN) | New Generation 8.5 | New Generation 8.5 | New Generation 8.5 |
| PINION POSITION (FRONT) | High Pinion | High Pinion | High Pinion |
| RING GEAR DIAMETER (REAR, IN) | New Generation 8.8 | New Generation 8.8 | N/A |
| PINION POSITION (REAR) | Low Pinion | Low Pinion | N/A |
| STANDARD RATIO | 4.10 | 4.10 | 4.10 |
| AFTERMARKET RATIOS | 4.88, 5.13, 5.38 | 4.88, 5.13, 5.38 | 4.88, 5.13, 5.38 |
| DIFFERENTIAL TYPE (F/R) | Electric selectable locker | Electric selectable locker | Electric selectable locker |
CASE DESIGN | 4 spider gears | 4 spider gears | 4 spider gears | | ARB/DETROIT LOCKER COMPATIBLE? | No | No | Yes |
| PINION SHAFT (MAX DIA-INCHES) | 1.625 | 1.625 | 1.625 |
| PINION SHAFT (MIN DIA-INCHES) | 1.375 | 1.375 | 1.375 |
| PINION (DIA INCHES/SPLINES) | 1.25/24 | 1.25/24 | 1.25/24 |
| INNER PINION BEARING O.D. (INCHES) | 3.25 | 3.25 | 3.25 |
| OUTER PINION BEARING O.D. (INCHES) | 2.85 | 2.85 | 2.85 |
| CARRIER BEARING O.D. (INCHES) | 3.313 | 3.313 | 3.313 |
| REAR AXLE SHAFT (DIA INCHES/SPLINES) | New Generation 1.41/32 | New Generation 1.41/32 | N/A |
| FRONT AXLE SHAFT (DIA IN/SPLINES) | 1.31/30 | 1.31/30 | 1.31/30 or 1.5/35 |
| FRONT SHAFT U-JOINT | New Generation 1350 | New Generation 1350 | New Generation 1350 or 1480 |
| FRONT BRAKE DIAMETER (INCHES) | 12.0 Disc | 12.0 Disc | 12.0 Disc or 13.25 Disc |
| REAR DISC OR DRUM? | All Disc | All Disc | N/A |
| REAR BRAKE DIAMETER (INCHES) | 12.5 Disc w/ P-brake | 12.5 Disc w/ P-brake | N/A |
| FRONT TUBE (DIAMETER X WALL INCHES) | 2.75 x 0.375 | 2.75 x 0.375 | 2.75 x 0.375 or 3.0 x 0.375/0.500 |
| REAR TUBE (DIAMETER X WALL INCHES) | 3.25 x .375 | 3.25 x .375 | N/A |
| WHEEL MOUNT SIDE-TO-SIDE (INCHES) | 65.375 | 60.5 | YJ & TJ: 60.5, JK: 65.375 |
| WHEEL BOLT PATTERN (LUGS ON DIA) | 5-on-5.0 and 5-on-4.5 | 5-on-5.0 and 5-on-4.5 | Any |
| AVAILABLE FROM | Dynatrac | Mopar & Chrysler dealerships and Dynatrac | Dynatrac |
| PART NUMBER-MOPAR/CHRYSLER | N/A | P5155256 Front TJ P5155257 Rear TJ | N/A |
| PART NUMBER-DYNATRAC | JP44-3002-F Front JP44-4001-E Rear | JP44-3002-E Front TJ JP44-4001-D Rear TJ JP44-3002-D Front YJ | DA44-3010-D Front JK DA44-3010-E Front TJ DA44-3010-F Front YJ JP44-4001-C Rear YJ |