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Performance Race Series

PR Series

The PR Series design for mainly track race use only.

 ● PR-A = Front Rubber Top Mount  /  Rear Rubber or OEM or No Top Mount

 ● PR-B = Front Pillow Top Mount (Camber plate if applicable)  /  Rear Rubber or OEM or No Top Mount

 ● PR-C = Front Pillow Top Mount (Camber plate if applicable)  /  Rear Pillow Top Mount (w/out Camber)

 ● PR-D = Front OEM or No Top Mount  /  Rear Rubber or OEM or No Top Mount

(There is no PR-A for Front McPherson Strut vehicle application. Because PR series design mainly for track use, front McPherson Strut will mostly prefer Pillowball top mount for better handling and camber adjustment. For Double Wishbone Suspension, since the Pillowball top mount is less necessary, therefore it has PR-A available.)

The PR Series damper valving and spring rate setup are specially design for track use. The top mount and lower mount are specially reinforced for increase strength and durability to cope with the harsh operating on the track.

The Japanese Racing Driver and Engineer that help developed R5 racing performance suspension provided many of his knowledge into developing the valving for different series, and also help us fine tune the setting on the race track. So the PR series can give driver much better handling to race harder on the race track.


​ The PR Series Features :​ 

  • 32 Levels Damping Force Adjustable

  • Simultaneous Compression / Rebound Adjustment

  • Linear Piston And Damping Curve

  • MONOTUBE Shock Design

  • 18 Months Limited Warranty on Shock Damper

  • Independent Ride Height Adjustment from Lower Mount. Not affecting spring compression and ride quality. ​

  • Reinforced Lower Mount - the lower mount has been reinforced for increase strength and durability to cope with the harsh operating on the track.

  • Camber Pillowball Top Mount - for vehicle with front McPherson strut, customer can order PR-B with front Pillowball Top Mount (with Camber plate if applicable) for better handling and more camber adjustment.
    [Please NOTE, it is NORMAL that Pillowball Top Mount may have some rattling sound when driving. This does NOT affect performance of suspension. The warranty do NOT cover for Pillowball noise.]

  • Top Spring Bearing Cap - under Pillowball top mount to eliminate spring noise caused by cornering. This design enables spring and shock to perform together more effectively.

  • Friction Wave Washer - For MacPherson strut, Friction Wave Washer is installed between lower locking collar and bottom mount. Preventing lower locking collar become loose and lower bracket from spinning.

  • Rear Sustech Upside-Down Strut for selective vehicle models - Newly improved rear damping force adjustment method for vehicle models that previously cannot adjust rear damping by conventional design.

    For some vehicle models, the chassis area on top of rear suspension strut is sealed with no holes. For conventional design, the damping cannot be adjusted without shock removal, or drill holes on chassis, which cause serious inconvenience.

    With Sustech Upside-Down design, these vehicle can adjust damping force VERY EASILY now.

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