The best Traxxas Slash 4×4 upgrades depend on your needs. RPM Front or Rear A-arms are best for durability and protection with an unbeatable warranty, while MIP X-Duty CVD Drive Kit excels at handling extreme power with 4S LiPo capability. For complete suspension overhaul, OGRC Oil Shock Absorbers stand out with real oil-filled damping and adjustable ride height.
Upgrading your Slash 4×4 transforms it from a capable basher into an unstoppable machine. Whether you’re breaking stock parts or just want better performance, these upgrades address the most common weak points and enhance overall capability.
Quick Comparison Table
| Product | Material | Durability Rating | Power Handling | Warranty | Installation |
|---|---|---|---|---|---|
| RPM Front/Rear A-arms | Nylon Composite | Excellent | All Levels | Breakage Warranty | Easy |
| HobbyPark Aluminum Arms | 6061-T6 Aluminum | Very Good | Moderate | Standard | Easy |
| Traxxas Steering Bellcranks | T6 Aluminum | Excellent | All Levels | Traxxas Warranty | Moderate |
| OGRC Oil Shocks | Anodized Aluminum | Very Good | All Levels | Standard | Easy |
| HobbyPark Steering Set | Aluminum w/ Bearings | Good | Moderate | 100% Satisfaction | Moderate |
| 4Pcs CVD Drive Shaft | Steel/Aluminum | Good | Moderate-High | Standard | Moderate |
| MIP X-Duty CVD Kit | Carbon Steel | Extreme | 4S LiPo Rated | MIP Warranty | Moderate |
| AIYIHOBBY Metal Differential | Hardened Steel | Very Good | High | Standard | Moderate |
| Hobbypark Green Arms | 6061-T6 Aluminum | Very Good | Moderate | Standard | Easy |
| RC Station Wheels/Tires | Rubber/Plastic | Good | All Levels | Customer Service | Very Easy |
Best Traxxas Slash 4×4 Upgrades
1. RPM Front or Rear A-arms Blue – Unbreakable Nylon Suspension Arms
Best for: Bashers who break stock arms frequently and want worry-free durability with warranty protection.
Key Features:
| Feature | Details |
| Material | Proprietary nylon blend |
| Warranty | World-renowned breakage warranty |
| Compatibility | Slash 4×4, Stampede 4×4 |
| Manufacturing | Made in USA |
| Package | Need two for complete truck |
The RPM Front or Rear A-arms are the best suspension upgrade for bashers seeking unbreakable durability. These arms have earned their reputation through decades of proven performance and an industry-leading warranty.
The proprietary nylon blend provides serious strength and rigidity while maintaining flexibility to absorb impacts. Unlike aluminum arms that bend permanently, these flex and return to shape.
Installation is straightforward, though you’ll need two packages to complete your truck. The strengthening design around the rear axle means the upper hinge pin hole cannot be used on rear carriers.
RPM’s breakage warranty gives you complete peace of mind during aggressive driving. If you break them during normal use, RPM replaces them.
At just $12.45 per package, these represent incredible value for the durability they provide. They’re the smart choice for anyone tired of replacing broken stock arms.
Pros:
- Industry-best breakage warranty
- Proven durability over decades
- Made in USA quality
- Affordable price point
Cons:
- Need two packages per truck
- Rear upper hinge pin limitation
2. HobbyPark Aluminum Front & Rear Suspension Arms – Complete CNC Machined Set
Best for: Racers and smooth-surface drivers wanting precision handling and lightweight aluminum construction.
Key Features:
| Feature | Details |
| Material | 6061-T6 aluminum alloy |
| Finish | Anodized for durability |
| Package Contents | Complete 4-pack with hardware |
| Compatibility | Slash, Stampede, Rustler 4×4 |
| Precision | CNC machined tolerances |
The HobbyPark Aluminum Suspension Arms deliver precision handling through CNC-machined construction. These arms provide the increased strength and accuracy that serious drivers demand.
Constructed from 6061-T6 aluminum alloy with anodized finish, they’re both lightweight and durable. The CNC machining ensures perfect alignment for improved handling characteristics.
The complete 4-pack includes everything needed: left and right arms for front and rear, plus all screw pins and hardware. Installation is straightforward with included components.
These arms work best on tracks and smooth surfaces where precision matters most. For heavy bashing, consider RPM nylon arms instead.
At $22.97 for a complete set, they’re competitively priced and replace stock parts 3655X perfectly. The blue anodized finish adds visual appeal to performance gains.
Pros:
- Complete 4-pack with hardware
- CNC machined precision
- Lightweight aluminum construction
- Good value for complete set
Cons:
- Can bend under extreme impacts
- Better for racing than bashing
3. Traxxas 3743A Anodized Blue Aluminum Steering Bellcranks – OEM Quality Precision
Best for: Drivers wanting genuine Traxxas quality with improved steering precision and silky-smooth operation.
Key Features:
| Feature | Details |
| Material | T6 aluminum construction |
| Finish | Blue anodized coating |
| Assembly | Pre-assembled units ready |
| Compatibility | Slash 2WD specific |
| Operation | Reduced friction design |
The Traxxas Anodized Aluminum Steering Bellcranks are genuine OEM upgrades engineered specifically for precise steering. These machined aluminum units deliver silky-smooth operation that plastic parts cannot match.
Blue-anodized T6 aluminum construction provides excellent strength while looking fantastic. The precision machining ensures reduced friction for improved steering feel and longer component life.
Pre-assembled units make installation straightforward, and detailed instructions are included. The engineering is exclusively for Rustler, Bandit, and Slash 2WD models.
Note that these are designed for 2WD models, not the 4×4 Slash. The genuine Traxxas quality means perfect fitment and reliable performance.
At $29.95, they’re premium-priced but deliver the quality and precision you expect from Traxxas engineering. The improved steering response is immediately noticeable.
Pros:
- Genuine Traxxas OEM quality
- Silky smooth operation
- Pre-assembled for easy install
- Reduced friction design
Cons:
- Only for 2WD models
- Higher price point
4. OGRC Oil Shock Absorber – Real Oil-Filled Performance Shocks
Best for: Drivers seeking true oil-filled shock performance with adjustable ride height for improved handling.
Key Features:
| Feature | Details |
| Damping | Real oil-filled design |
| Body | Hard-anodized aluminum |
| Adjustability | Threaded spring collars |
| Compatibility | Slash 2WD/4×4, multiple models |
| Finish | Black and red anodized |
The OGRC Oil Shock Absorbers are real oil-filled shocks that deliver genuine performance improvements. Unlike friction shocks, these use actual shock oil for smooth, consistent damping across all terrain.
Hard-anodized aluminum bodies with threaded spring collars allow precise ride height adjustments. The unique sealing design prevents oil leakage while maintaining high-simulation performance.
Big bore design tames tough terrain with ultra-smooth damping and long-lasting performance. The machined aluminum construction provides optimal bump and jump control.
The bright anodized finish in black and red looks fantastic while protecting against wear. These shocks make your Slash handle significantly better on rough surfaces.
At $25.98 for a complete set, they’re excellent value for true oil shock performance. Installation is straightforward and the improvement is immediately noticeable.
Pros:
- Real oil-filled damping
- Adjustable ride height
- Hard-anodized aluminum bodies
- Excellent value pricing
Cons:
- Requires occasional maintenance
- More complex than stock
5. HobbyPark Aluminum Steering Bellcranks and Servo Saver Set – Complete Steering Upgrade
Best for: Slash 4×4 owners wanting improved steering precision with integrated bearing support.
Key Features:
| Feature | Details |
| Material | CNC machined aluminum |
| Bearings | Included for smooth operation |
| Finish | Navy blue anodized |
| Compatibility | Slash 4×4, Stampede 4×4 |
| Replacement | Stock part 6845X |
The HobbyPark Aluminum Steering Bellcranks and Servo Saver Set upgrades your Slash 4×4 steering system completely. CNC-machined construction with integrated bearings delivers precision and smooth operation.
Navy blue anodized aluminum looks sharp while providing increased strength over stock plastic parts. The included bearings reduce friction for improved steering feel and servo life.
This complete set replaces stock part 6845X perfectly on Slash 4×4 and Stampede 4×4 models. Note that servo horn and hardware are not included.
Installation requires moderate mechanical skill but results in noticeably improved steering response. The bearing support reduces slop and increases precision.
HobbyPark backs this with 100% satisfaction guarantee, showing confidence in their manufacturing quality. The navy blue finish adds a custom touch to your truck.
Pros:
- Complete set with bearings
- CNC machined precision
- 100% satisfaction guarantee
- Reduces steering slop
Cons:
- Servo horn not included
- Moderate installation complexity
6. 4Pcs Rear CVD Drive Shaft Heavy Duty – Steel and Aluminum Drivetrain
Best for: Moderate power users wanting stronger rear drivetrain components without premium pricing.
Key Features:
| Feature | Details |
| Material | Q235 carbon steel axles |
| Hex Adapters | 6061-T6 aluminum alloy |
| Package | 4-piece rear set |
| Compatibility | Slash, Rustler, Stampede 4×4 |
| Hardware | Screws and nuts included |
The 4Pcs Rear CVD Drive Shaft set provides heavy-duty drivetrain strength at a reasonable price. Q235 carbon steel axles with 6061-T6 aluminum hex adapters deliver reliable power transfer.
Professional manufacturing and fine workmanship ensure smooth transmission and high reliability. The ingenious design handles moderate to high power levels without breaking.
Complete hardware is included for straightforward installation on most 1/10 Traxxas 4×4 models. You can use these on rear only or purchase front set separately.
Good compatibility across multiple Traxxas models makes these versatile. The separate front and rear availability lets you upgrade as needed.
At $36.98 for the rear set, these offer solid value for improved drivetrain durability. They’re a smart upgrade before moving to premium options.
Pros:
- Carbon steel construction
- Complete hardware included
- Good cross-model compatibility
- Reasonable pricing
Cons:
- Not rated for extreme power
- Rear only in this package
7. MIP X-Duty CVD Drive Kit – Ultimate 4S LiPo Rated Drivetrain
Best for: Extreme bashers running 4S LiPo power who need the absolute strongest drivetrain available.
Key Features:
| Feature | Details |
| Power Rating | 4S LiPo capable |
| Material | Heat-treated carbon steel |
| Coating | Black oxide rust protection |
| Compatibility | Slash, Stampede, Rustler 4WD |
| Coverage | Front and rear complete |
The MIP X-Duty CVD Drive Kit is the ultimate drivetrain upgrade for extreme power applications. Rated for 4S LiPo batteries, these are engineered to handle punishment that destroys lesser components.
High-grade carbon steel construction with heat treatment provides exceptional durability track after track. The black oxide coating protects against rust even in tough environments.
Designed specifically for front and rear of popular 1/10 Traxxas 4WD vehicles, these ensure precise fit and dependable operation. The engineering is proven in extreme bashing conditions.
Installation requires moderate mechanical skill but the result is worry-free performance under maximum power. These are the choice of serious bashers worldwide.
At $79.99, they’re premium-priced but worth every penny for 4S power users. This is the last drivetrain upgrade you’ll ever need.
Pros:
- 4S LiPo rated strength
- Heat-treated carbon steel
- Rust-resistant coating
- Proven extreme durability
Cons:
- Premium pricing
- Overkill for stock power
8. AIYIHOBBY Metal Steel 6878 Differential Gear – Complete Slipper Clutch System
Best for: High-power setups needing metal differential gears with multiple pinion options for tuning.
Key Features:
| Feature | Details |
| Gears | Hardened steel internal |
| Spur Gear | 32P 54T included |
| Pinions | 15T, 17T, 19T options |
| Compatibility | Slash, Stampede, Rustler 4×4 |
| Motor Fit | 5mm or 3.175mm shafts |
The AIYIHOBBY Metal Differential is a complete slipper clutch system with hardened steel gears. All-metal internal construction provides the strength needed for high-power applications.
The 32P 54T spur gear works with three included pinion options: 15T, 17T, and 19T. This lets you tune gear ratios for your specific motor and driving style.
Heavy-duty hardened steel construction ensures long lifespan under demanding conditions. The included coupler adapts pinions from 5mm to 3.175mm shaft diameter.
Compatible with popular motor series including 3660, 3670, 4274, 550, 540, and 3650. The free-style gear ratio options give you tuning flexibility.
At $19.99, this represents excellent value for a complete metal differential system. The multiple pinion options add significant value for performance tuning.
Pros:
- All metal internal gears
- Three pinion options included
- Wide motor compatibility
- Excellent value pricing
Cons:
- Requires gear ratio knowledge
- More complex installation
9. Hobbypark Aluminum Suspension A-Arms Set Green – Complete Four-Pack System
Best for: Budget-conscious racers wanting complete aluminum arm sets with distinctive green styling.
Key Features:
| Feature | Details |
| Material | 6061-T6 aluminum alloy |
| Finish | Green anodized coating |
| Package | Complete 4-pack set |
| Compatibility | Slash, Stampede, Rustler 4×4 |
| Hardware | Pins and screws included |
The Hobbypark Green Aluminum Suspension A-Arms deliver complete arm upgrade with distinctive styling. CNC-machined 6061-T6 aluminum provides increased strength and precision over stock parts.
Green anodized finish sets your truck apart while protecting against wear. The complete 4-pack includes front and rear arms plus all necessary hardware.
CNC machining ensures precision tolerances for improved handling characteristics. These work best on tracks and smooth surfaces where aluminum’s rigidity benefits performance.
Compatible across multiple Traxxas 4×4 models including Slash, Stampede, Rustler, and Hoss. The complete set with hardware makes installation straightforward.
At $21.97, these match the price of other Hobbypark aluminum arms while offering unique green styling. They’re ideal for racers wanting both performance and appearance.
Pros:
- Distinctive green styling
- Complete 4-pack with hardware
- CNC machined precision
- Competitive pricing
Cons:
- Can bend under impacts
- Better for racing than bashing
10. RC Station 12mm Hex RC Wheels and Tires – Pre-Glued Short Course Set
Best for: Drivers needing affordable replacement wheels and tires for multiple surface types.
Key Features:
| Feature | Details |
| Size | 4.33″ OD, 12mm hex |
| Material | Premium rubber tires |
| Assembly | Pre-glued with foam inserts |
| Compatibility | Most 1/10 12mm hex trucks |
| Package | 4-piece complete set |
The RC Station Wheels and Tires are pre-glued short course tires ready for immediate use. Premium quality natural rubber with foam inserts provides good performance across multiple surfaces.
The 4.33-inch outer diameter with 12mm hex fits most 1/10 scale short course trucks. Special tread design offers non-slip performance on asphalt, cement, and racing tracks.
Pre-glued construction with foam inserts saves time and ensures proper assembly. The premium plastic wheels are durable while keeping weight reasonable.
Easy installation means you can swap these on quickly for different conditions. The versatile tread pattern handles various surfaces adequately.
At $29.99 for a complete set of four, these represent good value for replacement or spare wheels. Customer service support backs the purchase.
Pros:
- Pre-glued and ready to use
- Foam inserts included
- Versatile tread pattern
- Good value pricing
Cons:
- Not specialized for any surface
- Basic foam insert quality
How to Choose Best Traxxas Slash 4×4 Upgrades
Material Selection Matters
Choose materials based on your driving style and terrain. Nylon arms like RPM flex and absorb impacts without breaking, making them ideal for bashing and rough terrain.
Aluminum parts provide precision and lightweight performance but can bend permanently under extreme impacts. They’re best for racing and smooth surfaces where their rigidity improves handling.
Power Level Considerations
Match upgrades to your power system to avoid premature failure. Stock power setups work fine with basic aluminum or steel upgrades.
Running 3S or 4S LiPo batteries requires premium components like MIP X-Duty CVD kits. The heat-treated steel construction handles extreme torque that destroys lesser parts.
Complete Systems vs Individual Parts
Complete sets like the HobbyPark 4-pack arms offer better value when replacing multiple components. You get everything needed with matched hardware in one purchase.
Individual upgrades work when addressing specific weak points. Focus on parts that break frequently on your truck first, then expand upgrades as needed.
Warranty and Support
Consider manufacturer backing when choosing upgrades. RPM’s breakage warranty provides peace of mind for aggressive drivers who push limits.
Genuine Traxxas parts ensure perfect fitment and quality but cost more. Aftermarket options can offer similar performance at lower prices with varying support levels.
Installation Complexity
Evaluate your mechanical skill level before purchasing. Simple bolt-on upgrades like wheels, tires, and suspension arms require basic tools and minimal experience.
Drivetrain components like CVD shafts and differentials need moderate mechanical knowledge. Pre-assembled options like Traxxas bellcranks simplify installation compared to component kits.
Frequently Asked Questions
What’s the first upgrade I should do to my Slash 4×4?
Start with RPM A-arms if you break stock arms frequently, or upgrade to oil-filled shocks like OGRC for immediate handling improvement. Both provide noticeable performance gains and address common weak points.
Can I run 4S LiPo with stock drivetrain components?
Stock drivetrain components will fail quickly under 4S power. Upgrade to MIP X-Duty CVD shafts and metal differential gears before running 4S to avoid expensive breakage.
Are aluminum arms better than RPM nylon arms?
Aluminum arms provide precision for racing but bend permanently under impacts. RPM nylon arms flex and return to shape, making them more durable for bashing despite being less rigid.
Do I need to upgrade all four suspension arms at once?
You can upgrade arms individually, but complete 4-packs like HobbyPark sets offer better value. Replace the most damaged arms first if budget is limited.
Will aftermarket wheels fit my Slash 4×4?
Any 12mm hex wheels designed for 1/10 short course trucks fit the Slash 4×4. Verify the hex size and overall diameter match your needs before purchasing.
Final Thoughts
The RPM A-arms offer unbeatable durability with warranty protection for bashers, while MIP X-Duty CVD kits handle extreme 4S power. OGRC oil shocks provide the best value for immediate handling improvement.
Choose upgrades based on your power level, driving style, and budget. Focus on parts that break frequently first, then expand to complete systems for maximum performance.
Match material selection to your terrain—nylon for durability, aluminum for precision racing. Quality upgrades transform your Slash 4×4 from capable to unstoppable.
