We researched and compared the best 90mm crawler shocks available on Amazon, evaluating manufacturer specifications, industry standards, and aggregated owner feedback. Our goal is to help you find the right balance of performance, durability, and value for your RC rock crawler. Below are our top picks, each with honest pros, cons, and limitations.
| Photo | Product | Score | Buy |
|---|---|---|---|
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Injora 90mm Aluminum Threaded Shocks Best Overall Aluminum body, threaded adjustable, oil-filled, spring preload collars |
9.0 | 🛒 Check Price |
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RCLions 90mm Aluminum Oil Filled Shocks Runner Up Aluminum body, oil-filled, threaded preload, includes springs |
8.7 | 🛒 Check Price |
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HR Racing 90mm Aluminum Shocks Premium Pick Machined aluminum, hard anodized, dual o-ring seals, threaded |
8.4 | 🛒 Check Price |
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Axial 90mm Aluminum Shocks Trusted Brand Aluminum body, oil-filled, spring preload, Axial fitment |
8.1 | 🛒 Check Price |
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Traxxas 90mm GTR Shocks Performance Upgrade Plastic body with aluminum caps, oil-filled, threaded |
7.8 | 🛒 Check Price |
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Yeepme 90mm Aluminum Shocks Budget Option Aluminum body, oil-filled, spring preload, budget price |
7.3 | 🛒 Check Price |
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GPM 90mm Aluminum Shocks Customizable Aluminum body, oil-filled, rebuildable, multiple color options |
7.1 | 🛒 Check Price |
1. Injora 90mm Aluminum Threaded Shocks: Best Overall
The Injora 90mm aluminum threaded shocks consistently receive high praise from RC crawler enthusiasts. We compared them against several competitors and found the build quality and adjustability to be top-notch. The threaded body allows precise ride height changes, and the oil-filled damping provides consistent performance over rough terrain. Owner feedback highlights their smooth action and durability on rocky trails.
However, we noted that the seals can be prone to leaking if the collar is overtightened, so careful assembly is required. These shocks are best for intermediate to advanced users who want fine-tuning capabilities. Beginners might find the setup slightly fiddly, but the performance payoff is worth it.
- Threaded aluminum body allows quick ride height adjustment
- Smooth oil-filled damping with multiple spring rate options
- Includes extra seals and o-rings for maintenance
Pros: Excellent adjustability for fine-tuning; Durable construction with good corrosion resistance
Cons: Seals may leak if overtightened
2. RCLions 90mm Aluminum Oil Filled Shocks: Runner Up
The RCLions 90mm shocks offer a compelling balance of performance and affordability. In our research, we found that owner feedback often mentions their smooth damping and easy setup. The anodized aluminum body is scratch-resistant, and the included spring assortment allows for basic tuning. Specs match many higher-priced options.
However, we noticed occasional reports of thread binding on the preload collars, which can be frustrating. These shocks are ideal for budget-conscious crawlers who still want good performance. If you need ultra-smooth adjustability, you might prefer the Injora, but for most users, these are a solid choice.
- Smooth oil damping with adjustable preload
- Includes multiple spring rates for customization
- Anodized finish resists scratches and fading
Pros: Great value for the performance; Smooth operation out of the box
Cons: Threads can be slightly rough on some units
3. HR Racing 90mm Aluminum Shocks: Premium Pick
HR Racing is known for premium RC components, and their 90mm shocks are no exception. We evaluated them against industry standards for machining and seal quality. The hard anodized finish and dual o-ring seals make them highly resistant to wear and leaks. Owner feedback from serious crawlers often praises their longevity and consistent performance.
However, the higher cost and fewer included spring rates may deter some buyers. These shocks are best for dedicated hobbyists who want top-tier durability and are willing to invest. If you are on a tight budget or just starting out, you might find better value elsewhere.
- High-quality machining with tight tolerances
- Dual o-ring seals reduce leaking
- Hard anodized finish for maximum durability
Pros: Exceptional build quality and durability; Smooth, consistent damping
Cons: Higher price point; Limited spring rate options included
4. Axial 90mm Aluminum Shocks: Trusted Brand
Axial is a well-known name in RC crawling, and their 90mm shocks are a reliable OEM upgrade. In our comparison, we found they offer good durability and a straightforward installation for Axial chassis. Owner feedback indicates they perform well for general trail use and are easy to maintain with widely available parts.
However, the damping can be inconsistent out of the box, and adjustability is limited compared to aftermarket options. These shocks are best for Axial owners who want a hassle-free upgrade. If you need fine-tuning or have a non-Axial rig, consider other picks.
- Direct fit for many Axial crawlers
- Decent damping for trail crawling
- Replacement parts readily available
Pros: Plug-and-play for Axial models; Good support and parts availability
Cons: Less adjustable than competitors; Some users report inconsistent damping
5. Traxxas 90mm GTR Shocks: Performance Upgrade
Traxxas GTR shocks are a popular upgrade for their trucks, and the 90mm version offers a lightweight option for crawlers. We researched owner reviews and found that they improve articulation and reduce weight, which can enhance performance on technical lines. The threaded preload allows basic adjustment.
However, the plastic body is more prone to damage from rocks and impacts, and the oil capacity is lower, leading to potential overheating on long runs. These shocks are best for lightweight crawlers or those who prioritize articulation over durability. If you frequently crawl in rocky terrain, aluminum shocks may be a better choice.
- Lightweight plastic body reduces unsprung weight
- Threaded preload for basic tuning
- Compatible with many Traxxas models
Pros: Lightweight design improves articulation; Good for high-speed crawling
Cons: Plastic body less durable than aluminum; Limited oil capacity
6. Yeepme 90mm Aluminum Shocks: Budget Option
The Yeepme 90mm shocks are among the most affordable aluminum options on Amazon. Our research shows they provide basic oil damping and adjustable preload at a low price point. Some owners report satisfactory performance for light crawling, making them a good entry-level choice.
However, we found frequent complaints about inconsistent quality, with some units leaking or having rough threads. These shocks are best for beginners on a tight budget who are willing to accept potential issues. If you want reliable performance out of the box, spending a bit more is recommended.
- Affordable aluminum construction
- Basic oil damping
- Includes springs and hardware
Pros: Very affordable; Decent performance for the price
Cons: Inconsistent quality control; Seals may leak early
7. GPM 90mm Aluminum Shocks: Customizable
GPM 90mm shocks offer a rebuildable design and a range of color options, appealing to customizers. We compared them to other rebuildable shocks and found the concept good, but execution inconsistent. Owner feedback notes that while rebuildable, the seals may still leak after reassembly if not careful.
However, the price is relatively high for the quality delivered, and some users feel they are overpriced. These shocks are best for hobbyists who enjoy tinkering and want a specific color match. If you prioritize performance and value, other options may serve you better.
- Rebuildable design with replaceable seals
- Available in various colors
- Includes extra o-rings
Pros: Customizable colors; Rebuildable for extended life
Cons: Higher price for the quality; Some owners report leaking after rebuild
Frequently Asked Questions
What is the difference between oil-filled and emulsion shocks?
Oil-filled shocks use a separate oil chamber and a piston with small holes to provide damping, offering consistent performance. Emulsion shocks mix oil and air inside the same chamber, which can lead to inconsistent damping and foaming. For crawling, oil-filled shocks are generally preferred for better control.
How do I choose the right spring rate for my crawler?
Spring rate depends on your vehicle’s weight and desired ride height. Heavier rigs need stiffer springs to prevent bottoming out, while lighter rigs can use softer springs for better articulation. Many shocks come with multiple spring sets, allowing you to experiment. A good starting point is to set the ride height so the suspension sits at about 30% sag when the vehicle is at rest.
Are 90mm shocks compatible with all RC crawlers?
Not all crawlers use 90mm shocks. You need to measure the eye-to-eye length of your current shocks or check your vehicle’s specifications. Some popular models like the Axial SCX10 and Traxxas TRX-4 can accommodate 90mm shocks, but always verify fitment, especially for mounting hardware and shock tower spacing.
How often should I rebuild or maintain my crawler shocks?
Maintenance frequency depends on usage and conditions. For regular crawling in dusty or wet environments, check and clean the shocks after every few runs. Rebuild the shocks (replace oil and seals) every 10-20 runs or when you notice leaking or reduced damping. Always follow the manufacturer’s recommendations.
Can I use silicone oil in my crawler shocks?
Yes, silicone oil is commonly used in RC shocks because it remains stable across a wide temperature range and does not damage seals. It is available in various viscosities (e.g., 30wt, 40wt, 50wt) to tune damping. Avoid using petroleum-based oils as they can swell seals and cause leaks.
Our Verdict
After researching and comparing the top 90mm crawler shocks, our top pick is the Injora 90mm Aluminum Threaded Shocks for their excellent adjustability, smooth damping, and overall value. The runner up is the RCLions 90mm Aluminum Oil Filled Shocks, offering great performance at a more accessible price point. Both are reliable choices for upgrading your RC crawler’s suspension.
Last reviewed and spec-checked: June 21, 2026. We re-check our picks and listings periodically.
