Quick Take
When you're refreshing a powersports vehicle, suspension and tire upgrades tackle different problems. You may want to lower the ride height, replace a worn rear shock, add adjustable air shocks, or put fresh front and rear tires on the bike. The four listed options here range from a GSXR600 rear lowering link kit to a Dunlop D402 front/rear tire set, with listed prices spanning $66.08 to $443.98.
Listed Price Comparison
The listed prices below show the full spread from the least expensive suspension part to the two-tire set. The gap between the lowest and highest listed prices is $377.90.
| Listed option | Listed price | Price bar |
|---|---|---|
| Rear Suspension Lowering Links Kit Motorcycle Drop Link Adjustable | USD 66.08 | |
| 1 pair 330mm Adjustable Rear Air Shock Absorbers Suspension Powersports Parts | USD 96.12 | |
| SPI Rear Suspension Gas Shock Assembly SU-04323 | USD 135.45 | |
| Dunlop D402 MT90B16 MU85B16 Front Rear Tire Set Motorcycle Tires Harley Davidson | USD 443.98 |
Decision Matrix
- If you want to lower a GSXR600 and adjust the rear ride height with a two-link kit, the Rear Suspension Lowering Links Kit is the direct option.
- If you want an aftermarket rear gas shock that works with your OEM bushings, springs, and collars, the SPI Rear Suspension Gas Shock Assembly is the replacement-style choice.
- If you want a pair of adjustable shocks that can be used on an ATV, go-kart, or motorcycle, the 1 pair 330mm Adjustable Rear Air Shock Absorbers are the universal option.
- If you want a matched front and rear tire set for a street motorcycle, specifically a Harley-Davidson touring application, the Dunlop D402 MT90B16 MU85B16 set is the complete choice.
Product Notes
Rear Suspension Lowering Links Kit Motorcycle Drop Link Adjustable

The lowest listed product here is the Rear Suspension Lowering Links Kit. The model reference is GSXR600 drop links, and the kit includes two links. The benefit is that it lowers the frame to make the bike easier to handle, and the description says no installation instructions are required. The limitation is fitment: the model reference is specific to GSXR600 drop links, and the description says to confirm the model type and year work for your bike before ordering.
1 pair 330mm Adjustable Rear Air Shock Absorbers Suspension Powersports Parts

This pair of 330mm adjustable rear air shock absorbers includes mounting brackets, bolts, and spacer sleeves. It is listed as a universal fit for ATV, go-kart, or motorcycle, and the description says the gold anodized aluminum body resists rust and scratches. The advantage is that you get two shocks and the hardware in one purchase. The limitation is that it is not matched to one make and model; the universal fit means you are working with a general 330mm length and the included hardware rather than a custom-fit suspension piece.
SPI Rear Suspension Gas Shock Assembly SU-04323

The SPI gas shock assembly is positioned as an aftermarket replacement that works with OEM bushings, springs, and collars. That means you can keep those existing pieces and swap in this shock assembly. The listing includes a manufacturer part number and UPC, which makes it easy to identify the specific part. One limitation is that the image note says the photo is for reference only, so the actual product may vary slightly. Also, the description says it is designed to work with OEM bushings, springs, and collars, so those components are not included with the assembly.
Dunlop D402 MT90B16 MU85B16 Front Rear Tire Set Motorcycle Tires Harley Davidson

The Dunlop D402 set is the only product in this comparison that covers two wheels at once. It includes a front MT90B16 tire and a rear MU85B16 tire. The description calls it an approved Harley-Davidson touring tire with a three-ply polyester casing, two fiberglass belts, and a computer-optimized tread profile with an H speed rating. The limitation is that this is a street motorcycle tire set for touring use; the listed machine type is street motorcycle, so it is not a tire meant for ATV or off-road applications.
Final Recommendation by Use Case
- Lower a GSXR600 at the lowest listed price: Choose the Rear Suspension Lowering Links Kit.
- Replace a rear shock with an aftermarket part that works with your OEM hardware: Choose the SPI Rear Suspension Gas Shock Assembly.
- Get two adjustable rear shocks for an ATV, go-kart, or motorcycle: Choose the 1 pair 330mm Adjustable Rear Air Shock Absorbers.
- Put fresh front and rear touring tires on a Harley-Davidson street motorcycle: Choose the Dunlop D402 set.