About this guide
A Slash 4×4 axle upgrade has to match the truck generation, hubs and intended power. These nine real options cover stock replacement through steel CV upgrades; confirm front versus rear position and whether your truck has the newer Extreme Heavy Duty suspension before ordering.
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The picks, in detail
Traxxas 9051X Steel-Spline CV Driveshafts, Front
Traxxas 9051X is listed as a complete front pair of steel-spline constant-velocity driveshafts in the Slash 4X4 Ultimate 68077-4 parts list; verify the truck uses the matching steel-spline system.
- front pair
- steel-spline CV
- complete assembly
- part 9051X
- Factory front-specific component
- Parts-list-confirmed designation
- Not interchangeable with the rear-specific 9052X
MIP X-Duty CVD Kit for Traxxas Slash 4×4
MIP’s hardened-steel X-Duty CVD system is a serious option for high-power Slash 4×4 bashing rather than a cosmetic aluminum replacement.
- hardened steel components
- CVD joint design
- rebuildable hardware
- Built for repeated hard impacts
- replaceable wear components
- Installation is more involved than stock shafts
Tekno RC M6 Driveshafts for Traxxas 4×4
Tekno’s M6 driveshaft conversion is a heavy-duty steel drivetrain choice for 4×4 Traxxas trucks; buy the kit specifically listed for the Slash platform and generation.
- M6 steel driveshaft design
- conversion-kit format
- rebuildable joints
- Popular upgrade family for powerful RC trucks
- Designed for serviceability
- Requires checking exact kit compatibility before purchase
Traxxas Extreme Heavy Duty Upgrade Kit 9080
The factory Extreme Heavy Duty kit is the sensible system-level upgrade for a current Slash 4×4 VXL that needs stronger suspension and drivetrain-related pieces together.
- factory upgrade kit
- heavy-duty suspension components
- Traxxas-specific fitment
- Keeps the truck within one factory system
- Good starting point before isolated axle changes
- Not a standalone answer for every older Slash 4×4
Hot Racing Steel CVD Driveshaft Set for Slash 4×4
Hot Racing offers steel CVD replacements for Slash 4×4 applications, giving a metal-joint option for builders who verify the exact SKU against their truck’s arms and hubs.
- steel CVD shafts
- model-specific kits
- aftermarket replacement
- Common aftermarket brand
- Multiple fitment variants exist
- Part-number matching is essential
GPM Racing Steel Driveshaft Set for Traxxas Slash 4×4
GPM Racing’s metal driveshaft sets are a lower-cost upgrade route for Slash 4×4 owners who confirm the listing’s generation, wheel carrier and shaft position.
- metal driveshaft construction
- aftermarket replacement set
- multiple finishes available
- Usually costs less than premium CVD systems
- Widely sold as vehicle-specific sets
- Quality and fit depend on the exact kit and truck revision
Traxxas 6851R Steel-Spline CV Driveshafts, Front
Traxxas part 6851R is the complete pair of front steel-spline constant-velocity driveshafts shown in the Slash 4X4 Ultimate 68077-4 parts list; it is not a rear set.
- front pair
- steel-spline CV design
- complete assemblies
- part 6851R
- Exact factory part identification
- Pair replaces both front sides
- Requires compatible steel-spline output and hub parts
Traxxas 6852R Steel-Spline CV Driveshafts, Rear
Traxxas 6852R is the matching complete rear pair in the 68077-4 Slash 4X4 Ultimate parts list, so it must not be substituted for the 6851R front pair.
- rear pair
- steel-spline CV design
- complete assemblies
- part 6852R
- Factory rear-specific replacement
- Matches the front kit family
- Front and rear kits are different part numbers
MIP X-Duty Front CVD Kit 10132
MIP 10132 is the current X-Duty front CVD kit explicitly sold for the Traxxas Slash 4×4; the retail listing showed it in stock at $59.99.
- front CVD kit
- X-Duty line
- Slash 4×4-specific
- MIP 10132
- Exact front-kit part number
- Heavy-duty CVD option
- Buy the matching rear kit separately
What each one costs
Typical price, cheapest first. Tap a name to jump to that pick and its buy link.
Compare any three
| Traxxas 9051X Steel-Spline CV Driveshafts, Front | MIP X-Duty CVD Kit for Traxxas Slash 4×4 | Tekno RC M6 Driveshafts for Traxxas 4×4 | |
|---|---|---|---|
| Price | $70-$100 | $80-$115 | $80-$120 |
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Buying tips
- Identify the Slash 4×4 generation and axle position before comparing part numbers.
- A stronger shaft can shift the next failure point to carriers, bearings or differential outputs.
- Avoid mixing a wide-track hub system with shafts intended for standard arms.
As an Amazon Associate and eBay Partner, toptenpick.com earns from qualifying purchases. Prices and availability are subject to change.