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Model Applications

Three Subaru Model variations fitted with Transmission Type TY856WB8JA as standard, or available as a factory fitted option.

TY856WB8JAGDBGJPImpreza WRX STi spec.C 17″ tyre280 PSMay '06Apr.'07
TY856WB8JAGDBGJPImpreza WRX STi spec.C 16″ tyre280 PSJun.'06Apr.'07
TY856WB8JAGDBGJPImpreza WRX STi spec.C type RA-R320 PSOct.'06Feb.'07

Plot GraphTransmission Specification

6-Speed Manual Transmission (6MT), fitted new to production cars from May 2006 to April 2007.

Main Transmission
First Gear Ratio3.636:1
Second Gear Ratio2.375:1
Third Gear Ratio1.761:1
Forth Gear Ratio1.346:1
Fifth Gear Ratio1.062:1
Sixth Gear Ratio0.842:1
Seventh Gear Ratio
Reverse Gear Ratio3.545:1
High Range Ratio
Low Range Ratio
Drive System
Full-time four wheel drive with Driver Control Centre Differential (DCCD)
Rear Drive Transfer Ratio1.100:1
Front Differential
TypeHelical Limited Slip
Ring Gear Teeth39
Pinion Gear Teeth10
Final Drive Ratio3.900:1
Rear Differential
Final Drive Ratio3.545:1

Vehicle Speed at 1,000 rpm

Tyre SizeFirstSecondThirdForthFifthSixthSeventhReverse
205/55R168.40 km/h(5.22 mph)12.86 km/h(7.99 mph)17.34 km/h(10.78 mph)22.69 km/h(14.10 mph)28.76 km/h(17.87 mph)36.27 km/h(22.54 mph)−8.62 km/h(−5.35 mph)
235/45R178.55 km/h(5.31 mph)13.09 km/h(8.13 mph)17.66 km/h(10.97 mph)23.10 km/h(14.35 mph)29.28 km/h(18.19 mph)36.93 km/h(22.95 mph)−8.77 km/h(−5.45 mph)
235/40R188.58 km/h(5.33 mph)13.13 km/h(8.16 mph)17.71 km/h(11.00 mph)23.17 km/h(14.40 mph)29.36 km/h(18.25 mph)37.04 km/h(23.01 mph)−8.80 km/h(−5.47 mph)

The Tyre Sizes shown are the various OEM sizes for Subarus fitted with Transmission Type TY856WB8JA. For other tyre sizes, or for vehicle speeds at different engine speeds, see the Vehicle Speed Calculator and Graph page.

Transmissions with Matching Ratios

TY856UB1KADriver Control Centre Differential (DCCD)Helical Front LSD
TY856UB6AADriver Control Centre Differential (DCCD)Helical Front LSD
TY856UB9AADriver Control Centre Differential (DCCD)Helical Front LSD
TY856WB7JADriver Control Centre Differential (DCCD)Helical Front LSD
TY856WB7KADriver Control Centre Differential (DCCD)Helical Front LSD
TY856WB8KADriver Control Centre Differential (DCCD)Helical Front LSD
TY856WB8KDDriver Control Centre Differential (DCCD)Helical Front LSD