If you’re seeking a rear bike shock with lockout for XC, trail, or all-mountain riding, these five options offer adjustable air pressure, rebound, and lockout features to tune your ride. Each product suits different rider needs—from lightweight setups for quick climbs to robust units for rough terrain. This guide helps you choose the right shock based on size, adjustability, and riding style.
Summary table of chosen products
| Product | |||
|---|---|---|---|
| DNM AO-39RC 190×50 | 190×50 mm | Aggressive XC/Trail with firm to medium feel | |
| DNM AO-38RC 190×50 | 190×50 mm | All-around performance, lighter air-only shock | |
| Mountain Bike Rear Shock 190mm | 125/150/165/190 mm options | Wide model compatibility, versatile setup | |
| DNM AO-6 150/125 mm | 125×21 mm or 150×31 mm | Compact, lightweight rear suspension | |
| DNM AO-38RC 165×35 | 165×35 mm | Lightweight XC/Trail upgrade |
DNM AO-39RC 190×50 Rear Shock
Best for riders who want robust adjustability on XC or trail platforms. The AO-39RC features rebound, lockout, and air pressure adjustments on a dark hard-anodized AL-7075 shaft and AL-6061 body. Available sizes include 165×35 mm, 190×50 mm, and 200×55 mm, making it suitable for a range of bikes. This model’s main advantage is precise damping control and a higher main air pressure capacity (up to 250 psi). It’s a solid choice for riders who value a customizable feel and reliable performance on rough trails.
Who this is best for: riders who want strong configurability with precise damping and a higher pressure range. Choose this if you ride varied terrains and need a reliable lockout feature for climbs. Caution: heavier frames may require careful clearance due to valve layout and potential interference near some frames.
DNM AO-38RC 190×50 Rear Shock
This AO-38RC model emphasizes a light weight without sacrificing performance, featuring rebound, lockout, and adjustable air pressure. It lists sizes 165×35 mm, 190×50 mm, and 200×55 mm, with a maximum air pressure around 270 psi. It’s CNC machined for leak resistance and uses a 10 mm shaft. This shock offers a good balance of weight, stiffness, and tunability for XC and trail riders.
Who this is best for: riders who want a lighter air shock with strong lockout action for climbs. Better for racers or fast riders who prioritize weight savings. Limitation: some frames may have limited clearance around the negative air valve in certain configurations.
DNM AO-38RC 165×35 Rear Shock
Similar to the 190×50 variant, this 165×35 mm AO-38RC provides rebound, lockout, and air pressure adjustments with a compact footprint. It uses a CNC-machined 7075 shaft and a hard-anodized alloy body for durability. Suitable for XC or trail setups where space and weight savings matter. This option is best for riders with smaller frame geometries who still want adjustable damping and lockout.
Who this is best for: riders with smaller frames or shorter travel demands who still want full adjustment capability. Caution: the shorter travel may limit bottom-out protection on very rough terrain.
Drhomeam Mountain Bike Rear Shock 190mm
This shock offers a wide sizing range including 125 mm, 150 mm, 165 mm, and 190 mm, with adjustable air pressure and rebound/lockout options. Constructed from aluminum alloy, it emphasizes superior shock absorption to reduce vibrations on rough surfaces. It’s a good match for riders who want versatile sizing to fit multiple bikes or evolving setups.
Who this is best for: riders seeking a versatile, multi-size rear shock that can adapt to different bikes or changing ride preferences. Caution: ensure correct sizing before purchase, as incorrect eye-to-eye length won’t fit your bike.
Buying Guide: Key Factors To Consider When Choosing
- Riding style and terrain: Trail, XC, or all-mountain riders should prioritize models with robust damping control and reliable lockout for climbs.
- Size compatibility: Eye-to-eye length and travel determine if the shock fits your frame. Measure your bike’s rear linkage and space around the linkage area.
- Adjustability: Rebound, lockout, and air pressure adjustments allow fine-tuning for weight, terrain, and rider preference.
- Weight vs. durability: Aluminum bodies and CNC machined components improve durability with moderate weight gains. Consider frame clearance for air valves and negative air valves.
- Air pressure range: Higher pressure capacity supports firmer setups on rough terrains; ensure your pump gauge is accurate and compatible with the main chamber.
- Installation considerations: Check mounting hardware and bushing compatibility; some packages include bushings or require adapters.
- Maintenance: Look for models designed to minimize leaks and maintain pressure over time; longer service intervals reduce downtime.
FAQ
- What is “lockout” on a bike shock?
Lockout stops the shock from compressing, improving efficiency on smooth climbs and rolling terrain.
- Can I replace my existing shock with an AO-38RC or AO-39RC?
Yes, if your frame supports the eye-to-eye length and mounting hardware, and you choose the correct travel option.
- How do I know what air pressure to use?
Start with a moderate pressure based on rider weight and terrain, then fine-tune using the rebound and lockout settings.
- Is a lighter shock always better?
Lightweight shocks improve efficiency, but may sacrifice bottom-out protection on very rough trails. Balance weight with durability and travel needs.
- Do these shocks fit all mountain bike frames?
Not all frames are compatible. Verify eye-to-eye length, travel, mounting hardware, and frame clearance before purchasing.