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MEROCA

MEROCA Adjustable Air Spring Coil Over Shock Absorber for Mountain Bikes, 190-265mm, 550LBS Spring, Rebound, Compression, Preload, and Air Pressure (200-300 PSI) Fits MTB/Downhill/eBikes

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Availability: In Stock.
Fulfilled by MEROCA
Arrives Mar 26 – Apr 4
Order within 6 hours and 35 minutes
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Size: 190mm*550lbs


Features

  • Quadruple adjustmen: Precisely tune your ride with independent Rebound, Compression, Preload, and Air Pressure (200-300 PSI) controls. Optimize shock response for technical trails or downhill sprints
  • High-impaact 550Lbs spring: 9mm-thick coil spring handles aggressive riding with 550LBS/in strength. Engineered for enduro/downhill MTB, e-mountain bikes, and intense off-road impacts
  • Universal Futment: Fits full-suspension MTB, downhill bikes, and e-motorcycles (12mm mounting holes). Plug-and-play install if eye-to-eye length matches (190/210/230/240/250/265mm options)
  • Protective impact absorber: Aluminum alloy body with buffer design reduces 35% component stress. Ensures stable handling on rocky terrains while extending drivetrain life
  • Optimized weight & durability: Aluminum alloy cuts weight to 885-1074g (by size). Corrosion-resistant seals thrive in mud/wet conditions

Description

MEROCA RCT-2: Conquer Trails with Pro-Level Control - Whether you’re shredding downhill singletracks, powering through e-MTB adventures, or navigating rocky enduro courses, this shock transforms your bike’s capability.Performance highlights4-Way Tuning Dominance: Dial in rebound speed (slow←→fast via rotary knob), adjust compression stiffness, set preload via spring collar, and fine- tune air pressure (200-300 PSI) for instantaneous terrain adaptation.DH-Grade Spring Tech: 550LBS/in spring force with 9mm wire diameter eats up square-edge hits.Zero Compromise Build: Black anodized aluminum body (56mm stanchion) resists scratches + corrosion. 885g-1074g weight cuts unsprung mass for sharper handling.Smart Compatibility: Fits 12mm axle mounts. Match your bike’s eye-to-eye length (190/210/230/240/250/265mm) and enjoy tool-free setup.Your trail advantage -Scenario 1: Downhill Charge, Maximize compression damping + 250 PSI pressure to stabilize big drops. Rebound set to "fast" maintains tire contact on successive roots. Scenario 2: e-MTB Expedition, Preload adjustment firms up the spring for added cargo weight. Lower rebound speed smoothens power delivery on technical climbs.Specs that matterMaterial: 6061-T6 Aluminum │ Weight: 885g (190mm) to 1074g (230mm) │ Travel: 50-65mm│ Color: BlackUPGRADE YOUR RIDE – ORDER YOUR RCT-2 SHOCK TODAY!Note: Manual measurements may vary slightly. Contact MEROCA Support for bike-specific fit confirmation.

Brand: MEROCA


Auto Part Position: Rear


Style: Performance


Vehicle Service Type: Bicycle, Motorcycle


Exterior Finish: Machined


Brand: ‎MEROCA


Auto Part Position: ‎Rear


Style: ‎Performance


Vehicle Service Type: ‎Bicycle, Motorcycle


Exterior Finish: ‎Machined


Material: ‎Aluminum


Extended Length: ‎265 Millimeters


Automotive Fit Type: ‎Universal Fit


Manufacturer: ‎MEROCA


Model: ‎RCT-2


Item Weight: ‎2.2 pounds


Package Dimensions: ‎7.87 x 3.2 x 3.2 inches


Item model number: ‎RCT-2


Manufacturer Part Number: ‎RCT-2


Date First Available: July 17, 2025


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Mar 26 – Apr 4

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • Game-Changer for MTB Suspension – Affordable, Tunable, and Built to Last!
Size: 265mm*550lbs
I’ve been ripping trails on my mountain bike for years, and upgrading to the MEROCA Adjustable Air Spring Coil has been one of my best decisions yet. Right from the unboxing, everything screams quality at a steal of a price – you won’t find this level of adjustability for under $100 anywhere else. The damping is spot-on and fully customizable via the air compression levels, letting me dial in the perfect balance for everything from flowy singletrack to chunky tech sections. It compresses smoothly under pedaling, absorbs impacts like a dream, and rebounds with just the right pop to keep me charging. Installation was a breeze – swapped it into my rear shock in under 30 minutes with basic tools, and the fitment is precise for most modern frames. The lightweight aluminum construction keeps things agile without sacrificing durability; it’s held up through muddy enduro stages and rocky descents without a hitch. At 550lbs spring rate, it’s plush enough for all-day comfort on my 180lb setup, but here’s my one wishlist item: MEROCA, if you’re listening, please drop heavier options like 700lbs or 1000lbs for us heavier riders tackling aggressive downhill lines. That would make it an absolute no-brainer for big-hit setups. Overall, this coil has transformed my bike’s feel – more confidence, less fatigue, and endless tweakability. If you’re on the fence, just hit “Buy Now” – you won’t regret it. Highly recommend for any trail or enduro enthusiast looking to level up without breaking the bank! 🚀 ... show more
Reviewed in the United States on November 14, 2025 by Josey
    • Good shock for super73 style Ebike
Size: 265mm*550lbs
Review Image by Evan Mendoza Evan Mendoza
Review Image by Evan Mendoza Evan Mendoza
The media could not be loaded. This shock really exceeded my expectations, I was able to install on my bike ( the Freego f3) and the adjustability is really good. You get the rebound and preload adjustments which all work as expected. It was very easy to install as it had minimal small parts. This shock would be a great upgrade from a stock bike shock. ... show more
Reviewed in the United States on February 1, 2026 by Evan Mendoza Evan Mendoza
    • Nice Shock
Size: 190mm*550lbs
Review Image by Fred B. Fred B.
Just installed this shock. lots of adjust-ability, Great ride at 1 click compression & 1 click rebound out of the 10 available 'click' adjustments. Haven't tried air pressure adjustment yet since it rides nice now. Bike came with a 750lb coil spring shock I replaced with a 750 lb DNM coil spring shock. The DNM shock busted in half after about 7 months of hard riding. This 550 lb shock/spring is more than sufficient stiffness and it never bottoms out or even gets close but absorbs the roots/rock/logs in stride. Its also very consistent and predictable. I like it so far, time will tell... great price for a piggy back shock ... show more
Reviewed in the United States on November 16, 2025 by Fred B. Fred B.
    • Heavy duty
Size: 240mm*550lbs
It was heavy duty and seemed to be made well for the cost. Unfortunately, I ordered the wrong size. I actually wanted to replace with a different size but that option was not available.
Reviewed in the United States on November 18, 2025 by Mike Bedlion
    • Meroca coil over shock
Size: 230mm*550lbs
Review Image by Joseph Seng Joseph Seng
Review Image by Joseph Seng Joseph Seng
Great shock with options. This coil over shock is a steal for what it is. With the ability to add air to tune for rider weight is awesome. Shock feels better than shocks ive spent 5 times more for. Cant beat the price for performance.
Reviewed in the United States on November 21, 2025 by Joseph Seng Joseph Seng
    • Best shock don’t get electro and co
Size: 210mm*550lbs
Absolutely great the adjustment are perfect for all riders but beware 190mm and 210mm for a stock razor mx 500 swing arm is a big difference
Reviewed in the United States on January 30, 2026 by Cole
    • The best and most affordable shocks, recommended over the dmn shocks
Size: 230mm*550lbs
Review Image by terrell webb terrell webb
These are some super advanced shocks, you can a adjust the dampening on them put em on my stealth bomber🥹
Reviewed in the United States on March 4, 2026 by terrell webb terrell webb
    • Worth it's price and more
Size: 240mm*550lbs
Went with the 190-265mm 550 lb. spring air shock to replace the cheap air shock that came on my AKEZ King Kong E-bike and WOW! Made a huge difference in the way my bike handles and responds to all the road imperfections I experience daily as I ride to and from work everyday. First off the spring preload is spot on once you get it set up but the real magic happens when you set the proper air pressure, the rebound and compression dampening. The 550 lb. spring is stout so not much air pressure is needed to achieve the proper settings. I'm around 210 lbs. and my air pressure is set at 90 lbs. 2 clicks of rebound dampening and 1 click of compression dampening and this baby feels just as good if not better than any Fox or Marzocchi air shock I've owned. Totally worth it at less than $100 so buy it!! ... show more
Reviewed in the United States on November 16, 2025 by RW44

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