Choosing the right suspension cockpit can slow down a mountain bike build when you are weighing a rear shock against a front fork. These four listings cover both ends of that choice: the DNM Dual Air Shock is the only rear shock in the group, while the other three are MTB front forks. Listed prices run from USD 74.99 to USD 129.00, so the immediate decision is how much travel and adjustability you need for your trail, cross-country, or all-mountain riding.
Quick take
For the shock side, the DNM Dual Air Shock is the only rear unit here. If you are looking at front forks, the set includes a 26-inch air fork, a 27.5-inch fork, and a ZTZ multi-size fork. The price spread covers about USD 54 across the group, making the comparison more about fit and feature set than about a wide price gap.
Listed price comparison
| Listed option | Listed price | Bar |
|---|---|---|
| DNM Dual Air Shock | USD 114.99 | |
| 1* Suspension Fork 26" Air Shock | USD 74.99 | |
| 27.5 inch Mountain Bike Air Suspension Fork | USD 129.00 | |
| ZTZ 26"/27.5"/29" MTB Suspension Fork | USD 77.99 |
Decision matrix
| Option | Best for | What stands out |
|---|---|---|
| DNM Dual Air Shock | Shock-side tuning | Three-step lockout, damping adjustment, air pressure adjustability |
| 1* Suspension Fork 26" | 26-inch disc-brake builds | 120mm inverted air fork with rebound adjustment |
| 27.5 inch Air Suspension Fork | XC/AM riding | 180mm travel, 7000-series aluminum, external rebound damping |
| ZTZ 26"/27.5"/29" MTB Suspension Fork | Riders who want climbing control | Crown lockout feature |
Product notes
DNM Dual Air Shock Mountain Bike Bicycle Suspension Rear Shock 165/190/200mm MTB

When your build needs a rear shock rather than a front fork, the DNM is the unit to evaluate. It lists eye-to-eye lengths of 165/190/200mm, with a 190mm x 50mm travel spec. The controls are the strongest reason to consider it: three-step lockout, damping adjustment, compression lock, adjustable air pressure, and stroke adjustment. The listing also includes extra top and bottom bushings, which is a practical touch for installation planning. The trade-off is that it will not add front-end travel.
1* Suspension Fork 26" Air Shock Rebound 120mm MTB Mountain Bike Fork

This 26-inch inverted air fork is built around a 120mm stroke and rebound control, with air pressure rebound and tortoise-and-hare damping adjustment. It uses magnesium alloy outer legs and aluminum alloy shoulder and upper tube, and the weight is listed at 1.7kg. It is also explicit about one important constraint: disc brakes only, with a dual disc brake system. That makes it a focused option for a 26-inch MTB with disc brakes, but it will not suit rim-brake builds or larger wheel sizes.
27.5 inch Mountain Bike Air Suspension Fork for XC/AM MTB, 180mm travel

This fork targets 27.5-inch XC/AM bikes and carries the largest travel number in the group. The spec includes 180mm of stroke, forged 7000-series aluminum, a 2400g weight, a 1-1/8 straight steerer, and a 9x100mm quick-release axle. It also includes adjustable air pressure and external rebound damping, which gives the rider room to tune the fork without replacing internals. The listing condition is new other (see details), and the item note says the package was opened for inspection. The interface uses a straight steerer and QR axle, so it will match frames built for those standards.
ZTZ 26"/27.5"/29" MTB Suspension Fork,Shock Absorber XC Mountain Bike Front Fork

This ZTZ fork stands out because of its crown lockout. You can lock the suspension for climbing and unlock it for shock absorption on rougher terrain, which is a useful feature for mixed routes. The listing covers a long list of bike types, from mountain and gravel to city, folding, and fat bikes, so the fit statement is broad. The product name spans 26/27.5/29, while the listed wheel size is 27.5, making the wheel-size coverage the least uniform part of the listing. If you are shopping mainly for a lockout feature, this fork is worth a close look.
Final recommendation by use case
For the shock side of the build, the DNM Dual Air Shock is the clear match because its tuning controls are the main draw. For a front-end refresh on a 26-inch disc bike, the 1* Suspension Fork keeps the parts list simple. If you want a fork with a broad fit statement, the ZTZ 26"/27.5"/29" fork is the one to look at. For a 27.5-inch build that needs long front-end travel, the 27.5-inch Mountain Bike Air Suspension Fork is the option.