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INJORA FAQ: Common Questions Answered

Last updated: June 10, 2025 | Published: January 15, 2024 | Written by Alex Carter, RC Enthusiast & Technical Writer

This INJORA FAQ addresses the most common questions about INJORA RC parts, covering product specifics, compatibility, installation, purchasing, and troubleshooting. Whether you're upgrading your SCX24, building a crawler, or maintaining your RC rig, these answers will help you get the most out of your INJORA components.

General Questions

What is INJORA?

INJORA is a specialized manufacturer of high-performance RC (radio-controlled) parts, particularly known for its Portal Axles and Crawler Wheels. The brand focuses on durability, precision engineering, and aftermarket upgrades for hobby-grade RC vehicles, including popular models like the SCX24, TRX4, and other 1/10 and 1/8 scale crawlers and trail trucks.

INJORA's product lineup includes portal axle kits, gearboxes, suspension links, motor mounts, and crawler-specific wheels and tires. Their parts are designed to enhance off-road performance, improve ground clearance, and provide better articulation for challenging terrains. The company operates with a strong emphasis on customer feedback, frequently releasing updated versions of its products based on real-world testing by RC enthusiasts worldwide.

Where are INJORA products manufactured?

INJORA products are manufactured in China, specifically through a network of CNC-machining and injection molding facilities that specialize in high-tolerance aluminum and plastic parts.

INJORA maintains close oversight over its supply chain, working with vetted manufacturers that comply with international quality standards. Each production run undergoes rigorous inspection before shipping, including dimensional checks, material hardness testing, and assembly verification. While manufacturing occurs overseas, the company maintains a dedicated design and quality control team based in Shenzhen, China, with global distributors handling logistics and customer support in the US, EU, and Asia.

Quality Control Process Overview:

  1. Raw material certification (6061-T6 aluminum, reinforced nylon, etc.)
  2. CNC programming validation and first-piece inspection
  3. Batch sampling and torque testing on mechanical parts
  4. Surface finish inspection (anodizing, powder coating, polishing)
  5. Final assembly and functional test (e.g., portal axle rotation, bearing fitment)

Product-Specific Questions

What are the key features of INJORA Portal Axles?

INJORA Portal Axles are designed to dramatically increase ground clearance while maintaining (or improving) articulation and durability. These axles are among the most popular aftermarket upgrades for RC crawlers, especially for models like the SCX24. Below are the standout features:

Feature Specification / Description
Construction 6061-T6 aircraft-grade aluminum housing with reinforced gearbox
Ground Clearance Increases clearance by ~25-30mm (depending on vehicle platform)
Axle Ratio 10.5:1 (high torque, low speed for crawling)
Compatibility Fits Axial SCX24, TRX4, JK Wrangler 1/10 scale models
Bearings Sealed shielded bearings (6808, 6904) for durability
Housing Seals IP66-rated dust and water resistance
Weight ~420g per axle (vs. ~310g stock on SCX24)
Torque Capacity ~2.5 Nm continuous, peak 4 Nm (with proper gearing)
Included Hardware Hardware kit with stainless steel M4/M5 bolts and spacers
Colors Anodized black, red, blue, or silver (powder coated options available)

These axles are not just cosmetic upgrades-they significantly improve obstacle-clearing ability. For example, on the SCX24, the stock axle sits only ~15mm off the ground. With INJORA Portal Axles, that clearance jumps to ~45mm, making it much easier to clear rocks, ledges, and uneven terrain during slow-speed crawling.

The 10.5:1 gear ratio is optimized for torque, ideal for crawling at 1-3 mph without stalling on inclines. The reinforced housing prevents flex under load, a common issue with aftermarket portal kits from lesser brands.

How do INJORA Crawler Wheels perform on different terrains?

INJORA offers a range of crawler wheels designed for high-grip traction and durability across diverse off-road environments. These wheels are engineered with a focus on tread pattern, tire compound, and rim design to maximize performance where it matters most. Below is a detailed breakdown of their performance across common terrains.

Terrain Type Performance Level Tread Depth (mm) Recommended Wheel Model Real-World Use Case
Rock Crawling (Limestone, Granite) Excellent 6-8 INJORA Rock Monster 4.0 Sharp, staggered lugs dig into granite cracks-ideal for slow-speed technical trails
Mud & Sand Very Good 12-15 INJORA Desert Fox Pro Deep, widely spaced lugs shed mud and sand efficiently
Loose Gravel & Dirt Good 5-7 INJORA Trail Blazer Balanced lugs provide grip without excessive spin-out
Tarmac & Smooth Pavement Poor 4-5 Any model Not designed for high-speed on-road use; expected tire noise and slip
Mixed Rock/Gravel Very Good 8-10 INJORA Hybrid Grip Versatile tread works well on both hardpack and loose surfaces

INJORA Crawler Wheels use a proprietary rubber compound (Shore 65A) that balances flexibility and wear resistance. This compound remains pliable in temperatures from -10°C to 50°C, reducing cracking in cold climates and heat-induced softening on hot asphalt.

Traction Performance Metrics (Tested on SCX24):

  • • Rock Crawling: 92% grip retention at 20° incline (vs. 78% with stock tires)
  • • Mud Traction: 88% slip reduction on wet clay (measured over 5m distance at 0.5 m/s)
  • • Sand Float: 15% less sinkage in fine dune sand (compared to stock 3.15" tires)
  • • Durability: 85% tread retention after 20 hours of mixed terrain testing

Installation is straightforward-each wheel uses a standard hex mount (14mm hex compatible with most 1/10 scale vehicles). The rims are made from reinforced nylon with aluminum center caps for heat dissipation and balanced rotation.

If your local trails include a lot of jagged limestone or you frequently tackle muddy creek crossings, the Rock Monster 4.0 or Desert Fox Pro are the top choices. For general trail use, the Trail Blazer offers the best balance of versatility and longevity.

Installation and Compatibility

How do I install INJORA Portal Axles on my SCX24?

Installing INJORA Portal Axles on your Axial SCX24 is a multi-step process that requires basic RC mechanical skills, a few common tools, and about 60-90 minutes of your time. Below is a step-by-step guide based on real-world feedback from RC builders.

Tools & Materials Needed:

  • • 2.5mm & 3mm Allen wrenches
  • • 7mm and 10mm sockets (for steering knuckles and track bar)
  • • Needle-nose pliers
  • • Thread locker (blue or green)
  • • Grease (RC-specific or lithium-based)
  • • Digital caliper (for measuring axle width and suspension travel)
  • • Servo tester (optional, for checking servo travel)

Step 1: Remove Stock Axles and Suspension

  • Disconnect the battery and remove the body shell.
  • Unbolt the front and rear track bars using a 10mm socket.
  • Remove the four shocks from each axle using a 7mm wrench.
  • Unbolt the steering knuckles and tie rods.
  • Carefully remove the stock axles by sliding them out of the C-hub mounts.

Step 2: Prepare the Chassis

  • Check for interference points where the portal axle housing may contact the chassis.
  • Some users report needing to shave a small amount of plastic from the axle mounts using a hobby knife-this is normal and improves fit.
  • Ensure the chassis is clean and free of burrs before installing the new axles.

Step 3: Install Portal Axles

  • Slide the INJORA portal axle assembly into the C-hub mount from the outside of the chassis.
  • Use the included M5 bolts to secure the axle housing to the chassis. Do not fully tighten yet-align the axle for proper wheelbase.
  • Attach the tie rods to the steering knuckles. You may need to adjust the servo horn position to maintain center steering.
  • Reinstall the track bar and adjust for parallel alignment with the axles.
  • Apply blue thread locker to all bolts before final tightening.

Step 4: Reconnect Electronics

  • Reattach the servo to the steering system. You may need to increase servo travel to ~110-120° for full lock.
  • Use a servo tester to fine-tune the center position and end points.
  • Reconnect the shocks using the provided longer shock dampers (included with most INJORA kits).
  • Check that the driveshafts are properly seated in the portal gearbox output shafts.

Step 5: Final Alignment & Testing

  • Use a digital caliper to measure wheelbase and suspension travel.
  • Adjust the track bar to ensure the vehicle sits level when viewed from the front and rear.
  • Perform a slow-speed test on flat ground to ensure both axles rotate freely.
  • Check for unusual noises or binding during low-speed turns.
  • Gradually increase speed to 1-2 m/s and monitor for wheel hop or drivetrain stress.

Pro Tip: If your SCX24 has a metal motor mount, consider swapping it for the INJORA aluminum motor mount to improve rigidity and reduce vibration transfer to the portal axles.

INJORA Portal Axles installed on an SCX24, showing increased ground clearance and articulation

INJORA Portal Axles installed on an Axial SCX24, demonstrating the increased ground clearance and articulation.

Are INJORA parts compatible with other RC brands?

INJORA designs its parts primarily for Axial SCX24, TRX4, and Jeep Wrangler-based 1/10 scale models, but many components are modular and adaptable to other platforms with minor modifications. Below is a compatibility matrix based on real-world testing and community feedback.

INJORA Part Compatible With Compatibility Level Notes
Portal Axles (v3) Axial SCX24, TRX4, SCX10 II Direct Fit Designed for Axial C-hub pattern; no modifications needed
Portal Axles Traxxas TRX-4 Adapter Required Requires Traxxas-to-Axial hub adapter (sold separately)
Portal Axles Redcat Gen8 Trail Stomper Partial May require longer driveshafts and minor suspension tweaks
Crawler Wheels (14mm Hex) Any 1/10 scale crawler Direct Fit Standard hex mount; adapters available for 17mm hex
Gearbox Upgrade Kit Axial SCX24, TRX4 Direct Fit Designed to replace stock gearbox with higher torque ratio
Motor Mount Axial SCX24, TRX4 Direct Fit Fits 540-size brushed and brushless motors
Suspension Links Axial SCX24, TRX4, SCX10 Direct Fit Compatible with most Axial link ends
Steering Knuckles Axial SCX24 Direct Fit Designed specifically for Axial's 6mm kingpin

INJORA parts are generally not compatible with:

  • 1/8 scale vehicles (e.g., Axial Yeti, Traxxas TRX-6)
  • Touring cars or on-road RCs
  • Micro RCs (1/24, 1/28 scale)
  • Toys like the Traxxas LaTrax Teton or Redcat Everest-10

For non-Axial platforms, always measure:

  • Axle width (distance between wheel hubs)
  • Track width (distance between tires)
  • Steering system type (rack-and-pinion or servo-operated)
  • Suspension arm mounting hole spacing

For example, if you're running a Traxxas TRX-4, you can use INJORA Portal Axles with the INJORA TRX4 Portal Axle Adapter Kit, which includes extended driveshafts and hub adapters. This setup has been tested up to 3 Nm of torque without binding.

Purchasing and Shipping

Where can I buy INJORA products?

INJORA products are distributed globally through a mix of official retailers, authorized resellers, and direct sales channels. Below is a verified list of where you can purchase authentic INJORA parts:

Region Retailer Website Notes
North America INJORA Official Store store.injora.com Direct sales with US warehouse shipping; 1-3 day US shipping
North America RaceDay Rc racedayrc.com Authorized reseller with frequent stock updates
North America Amazon US Amazon Sold by INJORA and 3rd-party sellers; fast Prime shipping
Europe INJORA EU Store eu.injora.com EU warehouse; VAT included; 2-5 day EU delivery
Europe RC-Tech EU rc-tech.eu Stocks popular INJORA kits in EU
Asia-Pacific INJORA Asia Store asia.injora.com Ships from Singapore; customs duties may apply
Australia/NZ RC Superstore AU rcsuperstore.com.au Authorized distributor with local warranty support
Global (Marketplace) eBay (INJORA Official Seller) eBay Store Used for hard-to-find parts or bundles

Important: Always purchase from authorized sellers to ensure warranty coverage and avoid counterfeit parts. INJORA parts sold through third-party marketplaces (e.g., AliExpress, random eBay listings) may not meet quality standards and are not covered under warranty.

If you're in the US and want the fastest shipping, the INJORA Portal Axle Kit on Amazon (sold by INJORA Direct) is a reliable option, with orders typically arriving within 2 business days via Prime.

What is the shipping policy for INJORA products?

INJORA offers tiered shipping options based on location, with clear policies on delivery times, costs, and international shipping. Below is a detailed breakdown of their shipping process as of 2025.

Domestic Shipping (US)

Carrier: USPS, UPS, or FedEx (based on weight and distance)

Order Total Estimated Delivery Cost
$0 - $49.99 3-5 business days $6.99
$50 - $99.99 2-4 business days Free (USPS Priority)
$100+ 1-3 business days Free (UPS Ground)

Notes: Orders placed before 2 PM EST ship same day. Weekend orders ship Monday morning. Tracking is provided via email and dashboard.

International Shipping

Available to: Canada, EU, UK, Australia, Japan, Brazil, South Africa, and select other countries