ARB OME BP-51 Adjustable Bypass Shocks & Coil Overs

After 4 years in development, we’re excited to announce a revolutionary new product from OME… BP–51.

Featuring fully adjustable bypass technology and utilizing state of the art materials, BP-51 shock absorbers and coil overs provide the ultimate in ride and performance over all terrains, delivering true racing technology for everyday applications. Check out the video for a sneak peek.

Please note – Limited stock will be available in Australia from December 2014 for initial applications (Toyota Land Cruiser 200 Series and HiLux 2005+ models). Limited availability throughout international markets will commence in Q2, 2015. Further applications will be announced as they become available.


4″ Jeep Wrangler JK Old Man Emu Suspension System

Jeep Wrangler JK 2 & 4 Door 4″ Lift
Click for 2-Door App Guide
Click for 4-Door App Guide



March 2012


Aftermarket four-wheel drive suspension is extremely complex. Determining the right solution for your vehicle and your requirements demands special attention to many factors. Unlike numerous aftermarket JK suspension systems on the market that only target lift height, OME offers a complete boxed kit that contains all the required components to fine tune the suspension for ride height and additional weight of accessories. All while maintaining the world famous OME ride quality.

OME’s engineering objective was to develop a complete 4 inch lift kit for the 2007+ Jeep Wrangler JK both 2 door and 4 door variants. After researching the market on what options were available and the solutions that competitors offered, a decision was made to offer a value for money, well-engineered solution that provides excellent ride and handling characteristics. OME is offering an integrated 4 inch kit that easily bolts on and has undergone countless hours of engineering and testing. Lifting the JK Wrangler ride height beyond 2 inches introduces a range of new challenges which the OME engineers have addressed with a complete suspension solution.



Fitting Old Man Emu Torsion Bar


Before removing the original

Image A: Measuring Ride Height

1. Torsion bars, the vehicle’s front and rear rim to guard measurements must be taken and noted down, as per Image A. Ride height is measured from the bottom of the rim to the wheel arch vertically through the centre of the hub.

2. Using either a hoist or axle stands; raise the vehicle so that the front suspension is off the ground.

3. Refer to Image B:

Image B: Measuring Threads

After cleaning and lubricating the two adjusting bolts, in the torsion bar anchor arms, measure and note the amount of thread protruding through the lock nut.

4. Using only hand tools loosen and remove the adjusting bolts.

5. Remove torsion bar and anchor arm assembly. Slide anchor arm and dust covers (if applicable) off the torsion bars.

6. Thoroughly clean the anchor arms, adjusting bolts and dust covers.

Thoroughly clean the anchor arms, adjusting bolts and dust covers.


Image C: Left and Right Markings

7. Refer to Image C: As each OME torsion bar is preset they are marked (LH) and (RH) and because of this they must only be installed as marked. As viewed from the driver’s seat: LH -to the left hand side. RH -to the right hand side.

8. Refer to Image D: Where there is a master spline on the torsion bars (shown in white) on installation they must be aligned to the anchor arms. Where the torsion bars have the same spline sizes at each end, the torsion bar can be installed with either end to the front.

IF there is a master spline, it will be marked with a white line

9. Slide the dust cover (if applicable) over the Old Man Emu torsion bars and apply grease to all splines and threads.

10. Install the torsion bar and align the anchor arm so the adjusting bolt is just protruding through the anchor nut. If required, the torsion bar can be rotated one spline at a time to adjust the position of the anchor arm.

11. Tighten the adjusting bolts so the same amount of thread, as noted in step 3, protrudes. Install dust covers.

12. Lower the vehicle back onto its wheels and drive a short distance to settle the front suspension.


All torsion bar adjustments must be done with the vehicle raised off the ground and the front suspension hanging. Do NOT adjust the torsion bars with the vehicle wheels on the ground.

13. Park the vehicle on level ground and measure the vehicle’s rim to guard measurements

Image E: Measuring the vehicle

(Refer to Image E).

14. Use the torsion bar anchor arm adjusting bolt to raise or lower the vehicle’s ride height, also to trim the vehicle from side to side, to the desired height.


15. To maintain good drive shaft, ball joint angles and to stop constant front suspension top out,

it is important to check after adjusting the vehicle’s ride height, that the vehicle has enough front wheel droop. Generally, a vehicle must have a minimum of 50 to 70mm of downward wheel travel (droop)

16. Front suspension droop is checked by taking the vehicle’s front rim to guard measurement, while the wheels are on the ground and noting it down (Refer to Image E). Then raise the front until the wheels are off the ground and take another rim to guard (Refer to Image F) measurement and note it down.

Image F: Measuring downward travel

By subtracting the first measurement from the second measurement, the amount of droop will be obtained. Carry out any adjustment that may be required.

17. All vehicles will require a headlight, front end alignment, and tire pressure check after the fitment of new torsion bars.

For 80-Series specific installs, Slee Offroad has a great write up on their site.