Best Pontiac G8 Suspension Bushings: SuperPro Guide

If you have ever planted your foot in a Pontiac G8 GT and felt the back end shudder and skip instead of hooking up, you already know why Pontiac G8 suspension bushings are the most underrated upgrade you can make to this car. The G8 left the factory with a brilliant rear-drive chassis — and soft, compliant rubber bushings that were tuned for showroom quietness, not for 361 to 415 horsepower. Seventeen years later, that rubber is cracked, oil-soaked, and letting the rear cradle walk around under load. Fresh polyurethane bushings from SuperPro fix that, and they do it for a fraction of what coilovers or sway bars cost.

At NLP Performance in Tampa, the G8 community keeps coming back to one brand for this job, and it is not an accident. In this guide we break down the six best SuperPro bushing kits for the 2008–2009 Pontiac G8 — what each one targets, what it costs, how hard it is to install, and which one you should buy first. Whether you are chasing drag-strip launches in a GXP or just want your daily-driven G8 to feel tight again, there is a kit here for you.

Why Does the Pontiac G8 Need Better Suspension Bushings?

The Pontiac G8 rides on GM's Zeta platform — the same Holden-engineered architecture that underpins the Chevrolet SS, the Caprice PPV, and shares DNA with the fifth-generation Camaro. It is a genuinely good independent rear suspension. The weak link was never the geometry; it was the rubber. A suspension bushing is the flexible joint that lets a control arm, subframe, or differential move through its designed arc while isolating road noise. Factory rubber does the isolation job well, but it also deflects — and on a 17-year-old G8, that deflection has turned into outright slop.

The most notorious symptom is wheel hop. When you launch a G8 hard, torque tries to rotate the rear differential and shift the rear subframe inside its mounts. The tired OEM bushings let the diff and cradle move several millimeters, the tires unload and reload in a rapid cycle, and the whole rear end hammers itself. Owners describe it as the car trying to shake itself apart. It is not just uncomfortable — it kills traction, slows your sixty-foot time, and over-stresses axles, the driveshaft, and motor mounts.

Beyond wheel hop, worn bushings cause vague, disconnected steering, a rear end that feels like it steers itself over mid-corner bumps, clunks over expansion joints, and inconsistent alignment as the control arms wander under cornering load. Replacing the bushings with properly engineered polyurethane locates every suspension component where the engineers intended, so power goes to the ground and the chassis finally feels as sharp as it looks.

What Makes SuperPro the Right Brand for the G8?

SuperPro is an Australian suspension company, and that matters more than it sounds. The Pontiac G8 is a rebadged Holden Commodore VE — it was designed and built in Australia. SuperPro has been developing bushings for Holden chassis on Holden roads for decades, which means the G8 is not an afterthought application for them. It is home turf. Every kit in this guide is a vehicle-specific design, not a generic bushing forced to fit.

SuperPro is also a polyurethane (concise definition: a tough, abrasion-resistant elastomer that resists deflection far better than rubber) specialist that tunes the material's hardness, called durometer, per application. Standard SuperPro bushings sit around a 70–74A durometer for a street-friendly ride, while high-load applications step up near 80A. The result is a bushing that locates the suspension precisely without the jackhammer harshness cheap one-size-fits-all poly is infamous for. Many SuperPro designs are also lubricated with a graphite-impregnated formula or supplied with synthetic grease, which is why properly installed SuperPro bushings rarely squeak.

Two more reasons the G8 crowd trusts SuperPro: the limited lifetime warranty on the polyurethane itself, and the brand's Quick Fit insert designs. Several of the kits below use supplement or insert bushings that fit alongside or inside the factory bushing housing — meaning you can dramatically reduce deflection without pressing the original bushings out. That turns a shop job into a driveway job.

The 6 Best SuperPro Suspension Bushings for the Pontiac G8

These are the SuperPro kits we recommend most often for the 2008–2009 Pontiac G8, ranked from the most complete build down to the smartest budget pick. Every one is in stock at NLP Performance and fits the G8 V6 and V8.

1. SuperPro Complete Vehicle Enhancement Bushing Kit — Best Overall

This is the kit for the owner who wants to do it once and do it right. The Complete Vehicle Enhancement Bushing Kit gathers SuperPro's front and rear handling-critical bushings into a single package, transforming how the G8 puts power down and how it tracks through a corner. At $460.19 it is the priciest option here, but bought as separate kits these pieces would total significantly more — and you do the labor once instead of pulling the car apart three times. If you are already replacing worn-out rubber on a higher-mileage G8, this is the smart play. Pair it with a set of new bolts and a fresh alignment and the car will feel a decade younger.

2. SuperPro Rear Traction Pack — Best for Wheel Hop

If you only buy one upgrade from this guide, make it the Traction Pack. It targets the exact two failure points behind G8 wheel hop: the rear differential mount bushings and the rear subframe bushings. SuperPro built this as a Quick Fit kit — it uses insert and supplement-style bushings that fit into the existing housings, so you get a massive reduction in cradle and diff movement without the press work a full bushing replacement demands. Our customers consistently report that wheel hop simply disappears after this kit, launches become repeatable, and the rear end stops feeling like it has a hinge in it. At $226.55 for the result it delivers, nothing else here is better value for a performance-minded G8 owner.

3. SuperPro Rear Differential-to-Subframe Mount Kit — Best Targeted Fix

Want to attack wheel hop on a tighter budget, or already have good subframe bushings? This is the standalone rear differential mount kit. The factory diff mount bushings are some of the softest rubber on the entire car, and they let the differential rock under throttle and trailing-throttle transitions. Swapping them for SuperPro polyurethane locks the diff in place, which sharpens throttle response, kills driveline clunk on tip-in, and removes the worst of the hop. It is the most cost-effective single change you can make to a G8's traction behavior, and it pairs perfectly with the rear subframe bushing kit if you want to build the Traction Pack a piece at a time.

4. SuperPro Front End Alignment Bushing Kit — Best for Steering Feel

Wheel hop gets the headlines, but a G8 with worn front bushings feels just as tired from behind the wheel — numb steering, a front end that wanders, and alignment numbers that refuse to stay put. The Front End Alignment Bushing Kit addresses the front control arm and locating bushings, restoring crisp turn-in and stable camber and caster. SuperPro engineers a degree of built-in adjustability into several of these pieces, so your alignment shop can dial in settings the factory hardware never allowed. If your G8 tramlines, follows ruts, or eats front tires unevenly, start here. It is also the natural front-end companion to the rear Traction Pack.

5. SuperPro Rear Lower Control Arm Outer Bushing Kit — Best for Cornering

This is the bushing that controls rear wheel location side to side — the outer joint of the rear lower control arm, mounted in the hub carrier. When it goes soft, the rear of the G8 develops lazy, imprecise mid-corner behavior and rear toe that changes under load. The SuperPro replacement firms that joint up and gives the rear axle the lateral discipline it needs to feel planted. At just $43.18 it is one of the highest handling-per-dollar upgrades on this list, and it is a popular companion to the Traction Pack for owners who want corner-carving precision on top of straight-line traction. Pair it with the matching rear lower inner control arm bushing kit to refresh the arm completely.

6. SuperPro Rear Upper Spring Seat Bushing Set — Best Budget Pick

The rear upper spring seat bushings, also called spring insulators, sit between the rear coil springs and the chassis. The factory rubber insulators dry out, compress, and crack — which causes ride-height inconsistency, creaking over bumps, and that hollow groan from the rear of the car on driveways. At $31.85, this SuperPro set is the easiest, cheapest way to silence those noises and restore consistent rear spring seating. It is the ideal job to knock out at the same time as your rear shocks or springs, since the springs already have to come out. Small part, real difference — and the perfect entry point into a SuperPro G8 build.

Pontiac G8 SuperPro Bushing Comparison

Are Polyurethane Bushings Worth It on a G8?

For a performance-oriented sport sedan like the G8, polyurethane bushings are absolutely worth it. The trade-offs are real but minor, and SuperPro's application-tuned durometer keeps them small. Here is the honest breakdown.

How to Choose the Right G8 Bushing Upgrade

Choosing comes down to your goal and your budget. If your G8 has more than 100,000 miles and you want it to feel new again, buy the Complete Vehicle Enhancement Bushing Kit and do everything at once. If your main complaint is wheel hop and skittering launches, the Rear Traction Pack is the targeted answer. Tight on cash? Start with the rear differential mount kit, then add the rear subframe bushings later.

Owners chasing the best handling should not stop at bushings. A SuperPro front adjustable sway bar kit and the front radius arm kit build naturally on a fresh bushing foundation. And because the G8 shares the Zeta platform with the Chevrolet SS, Caprice PPV, and fifth-gen Camaro, many SuperPro G8 parts cross over — though you should always confirm fitment by part number before ordering. If you ever need help matching a kit to your exact car, the team at NLP Performance can walk you through it.

Installation Tips and What to Expect

Most G8 bushing work happens on a lift with the car's weight off the suspension. The Quick Fit insert kits — like the components inside the Traction Pack — are the friendliest to home mechanics because they slot into the existing housings without a hydraulic press. Pressed bushings, such as the control arm kits, are best left to a shop with the right tooling unless you have a press and the patience to use it.

A few field-tested pointers from our Tampa shop: when you drop or load the rear subframe and differential, support the diff and snug each bolt a little at a time so everything seats square. Use the synthetic grease SuperPro supplies on every contact surface — this is the step that prevents squeaks. And budget for a four-wheel alignment afterward, especially with the front end and control arm kits, since fresh bushings will change where the suspension settles. Plan for a full day for the rear Traction Pack and a weekend for the Complete kit, or hand it to a trusted shop and enjoy the result.