Choosing a mountain bike suspension fork is usually a wheel-size and travel decision before anything else. Do you stick with the 26-inch wheelset and a lighter 120mm air fork, or move to 27.5-inch wheels and 180mm of travel? The two forks in this head-to-head sit at opposite ends of that spectrum, and the right one depends on your frame, your riding style, and how much weight you're willing to carry.
Quick verdict
The 26-inch air-shock fork is the lower-priced, lighter 120mm option for 26-inch builds with dual-disc brakes. The ZTZ Racing 27.5-inch air fork is the longer-travel, heavier 180mm option with more structural stiffness built for XC/AM and AM/Enduro frames. A $54.01 price spread separates them, so your budget and wheel size will do a lot of the deciding.
Comparison table
| Listed product | Listed price | Price bar |
|---|---|---|
| 26\" Suspension Fork 120mm Air Shock | USD 74.99 | |
| 27.5\" ZTZ Racing Air Suspension Fork 180mm | USD 129.00 |
Where each wins
The 26-inch fork wins on listed price and claimed weight. Its 1.7kg weight is lower than the ZTZ fork's 2400g, it is built around 120mm of travel, and it is specified for dual-disc brake systems only. That keeps it a lighter, lower-priced 26-inch fork for riders who don't need the extra travel.
The 27.5-inch ZTZ fork wins on travel and stiffness-oriented construction. It offers 180mm of travel, a reinforced dual arch design made from forged 7000-series aluminum, external rebound damping, and adjustable air pressure. It also uses a 9x100mm quick-release axle and a 1-1/8 straight steerer, fitting neatly into the XC/AM and AM/Enduro territory it is aimed at.
Product notes
1* Suspension Fork 26\" Air Shock Rebound 120mm MTB Mountain Bike Fork
The 26-inch fork pairs a 120mm stroke with an inverted air structure, rebound damping, and preload plus high-pressure adjustment. At 1.7kg, it is noticeably easier to move around than the ZTZ fork, and the listed price is lower. The black finish and straight 28.6mm steerer are part of the package, and the dual-disc-brake-only note makes it easy to match to a bike with disc brakes only. The tradeoff is travel: 120mm is shorter than the ZTZ fork's 180mm, so it won't absorb the same high-impact terrain. If you're staying with 26-inch wheels and want a comparatively light, short-travel air fork, this is the one to look at.
27.5 inch Mountain Bike Air Suspension Fork for XC/AM MTB, 180mm travel
The ZTZ Racing fork goes the other direction with 180mm of travel, a 27.5-inch wheel fit, and a dual arch design that is reinforced for stiffness. It uses forged 7000-series aluminum, an adjustable air spring, and external rebound damping, which gives you tuneability without changing parts. It also has a 9x100mm quick-release axle and a 1-1/8 straight steerer, so it is aimed at XC/AM style frames as well as AM/Enduro builds. The limitations are the higher price and the 2400g weight; you pay for the extra travel and structure in both cost and mass. For riders on 27.5-inch wheels who want long-travel capability from an adjustable air fork, the ZTZ Racing option is the stronger match.
Final choice by use case
- For 26-inch builds, dual-disc brakes, and lower cost: choose the 26\" Suspension Fork 120mm Air Shock.
- For 27.5-inch builds, 180mm travel, and tuneable air damping: choose the ZTZ Racing 27.5-inch Air Suspension Fork.
- When weight matters most: the 1.7kg 26-inch fork is lighter. When travel and stiffness matter most: the 180mm ZTZ fork is designed for bigger trail inputs.
