5TH GEN (CD4/SV4) 2.0 2WD. Item: Rear Lower Bar / Rear Member Brace.Reduce body roll up to 40%. Reduce chassis flex and noise. A car chassis is carry by 4 wheels and 4 shock absorbers. When driving on bumpy road, the shock of impact will be absorb by shock absorber, however if the chassis is not strong enough to support the shock absorber, the shock of impact will not all absorb by shock absorber but by chassis, causing chassis flex. Same thing happen when make a turn on corner, chassis will be twisted by the force of weight transfer. Strut Bar and Lower Arm Bar. Part of the shock of impact transfer to the chassis, causing wheel house and lower arm deforming. Equip with the Ultra Racing's strut bar and lower arm bar, both side shock of impact will be neutralized. The joint between A-pillar and front chassis will be push and twist by the greater shock of impact and drag force, causing damage on chassis. Recommend for user of sport absorber. On uneven / bumpy road, center section chassis will have different level of body flex cause by the weight transfer between front and rear. Ultra Racing's side lower bar will stabilize the weight transfer between front and rear, it can also minimize the damage from side impact. When turning in corner, the weight transfer will make the car sway a side, causing body roll and more difficult to turn in to a corner, weaken the steering respond. The upgrade version of Ultra Racing's anti roll bar will be more effectively preventing the car sway a side at cornering, greatly reduce body roll and high stability in cornering.