Incision SCX10-III Links vs Stock Links: What to Expect

Quick answer

If you run a VS4-10 or SCX10-III based build and keep bending or wearing out stock links, Incision SCX10-III links are the practical upgrade: they hold geometry better under load and survive rock contact that dents stock links. If your rig is mostly a light trail runner and the stock links are straight and tight, keep them and spend the money elsewhere first.

Stock links get the truck moving, but they are the part most likely to quietly ruin your day. A slightly bent lower link changes pinion angle, caster, and how the truck tracks under power, and you usually notice it as vague steering or a driveline vibration rather than an obvious failure.

This comparison looks at what actually changes when you move from stock links to Incision SCX10-III links on a Vanquish crawler, where the trade-offs show up, and how to decide whether the swap fits your build. It is written for VS4-10 owners and SCX10-III based rigs, so the fit notes below matter more than the marketing claims.

What each link set is actually doing

Stock links are light, cheap, and matched to the kit's factory geometry. They do their job on flat ground and light trails, but they are also the first thing to bend when a lower link catches a rock edge or a hard landing. Once bent, the link keeps that new shape and your suspension geometry is permanently off until you replace it.

Incision SCX10-III links are built as a direct replacement for that geometry, so you are not redesigning the suspension, you are replacing the weak point. The practical difference is not a dramatic handling transformation on day one. It is that the links stay straight and the truck keeps the handling it had when you built it.

• Check for bent links by rolling the truck on a flat surface and watching for a wobble in the lower links.
• Compare link length side to side before installing new ones; a mismatched pair will steer the truck under compression.

Durability and wear: where the money goes

The honest case for Incision links is repeatability. Stock links are consumable on a hard-driven crawler, and if you have replaced a bent lower link more than once, the upgrade pays for itself in fewer teardowns and fewer alignment checks. That is the whole argument, and it is a good one if you actually drive the truck hard.

If you mostly run light trails and the stock links are still straight, the upgrade is a want, not a need. Put the money into tires, steering, or drivetrain first. Links are a supporting part, and a fresh set of stock links will outperform a worn-out set of anything else.

• Replacing one bent link at a time is false economy; replace the pair so the geometry stays even.
• Keep the old straight links as spares for trail repairs.

Fit and installation notes for VS4-10 and SCX10-III builds

Fit is the deciding factor in any rc axle link comparison. Incision SCX10-III links are intended for SCX10-III and VS4-10 based trucks, so if your build uses a different axle or a custom link geometry, confirm the lengths before ordering. A link that is close but not correct will bind at full droop or pull the pinion angle out of range.

Installation is straightforward: support the chassis, remove one link at a time, and keep the hardware organized. Recheck the lower link bolts after the first run, because new links settle into the mounts and a loose bolt will feel exactly like a bent link.

• Cycle the suspension by hand through full droop and full compression before you run the truck.
• Re-torque link hardware after the first battery pack.

Cost, weight, and the trade-off nobody mentions

The trade-off is weight and cost versus stiffness. Stronger links are usually heavier, and on a small crawler that added unsprung weight is real, though most drivers will not feel it on a trail rig. What you feel instead is the truck holding its line on a sidehill because the links are not flexing under load.

There is also a failure-mode trade-off. A stock link bends and you can often bend it back to finish the run. A stronger link transfers that load into the mounts and the axle. If your mounts are worn or your hardware is soft, upgrade the hardware at the same time, or you will simply move the failure.

• Inspect link mounts and hardware before installing stronger links.
• If you run heavy wheels and tires, the added link stiffness is more noticeable and more useful.

Trade-offs at a glance

• Strength vs. weight: Stronger links resist bending but add unsprung weight and cost more than stock replacements. Worth it on a hard-driven crawler, not on a light trail truck.
• Geometry vs. adjustability: Incision SCX10-III links are a direct replacement, so they preserve factory geometry rather than letting you dial in custom angles. If you need custom link lengths, this is the wrong tool.
• Link upgrade vs. mount condition: Stiffer links move impact loads into mounts and hardware that may already be worn. Inspect and refresh mounts before installing stronger links.

Parts and facts that matter for this swap

• Incision Kingpin Shoulder Screws (4): Replaces the brass bushing and M3 buttonhead with a one-piece shoulder screw, and fits SCX10II Rockjock, SCX10II F9, and VS4-10 Rockjock 44 axles as a replacement part for the Vanquish VS4-10. If you are already in the front axle doing link or steering work, this removes a common source of play and slop at the knuckle.
• VS4-10 Straight Axle Steering Knuckle: Milled from billet aluminum, compatible with stock links, and includes a high steer arm that adds double shear support for the tie-rod and drag link. This is the part that takes the load when stronger links stop flexing, so it is a sensible companion upgrade rather than a separate project.
• VFD Twin Machined Transfer Case Gear Set: Replaces all sintered gears inside the VFD Twin transfer case with heavy duty machined steel 48P gears, and converts the idler gear assembly to a one-piece unit that reduces gear play and increases strength. If you are chasing driveline slop after a link change, the transfer case is the next place to look, and this set addresses play directly.

Who should make this swap

Best for

• VS4-10 and SCX10-III owners who have bent or replaced stock links more than once
• Drivers running heavier wheels and tires on rocky terrain where link contact is common
• Builders who want to keep factory geometry but stop chasing alignment after every hard run

Not for

• Light trail runners whose stock links are still straight and tight
• Builds with custom link geometry that need adjustable or non-stock lengths
• Owners who have not yet addressed worn link mounts or soft hardware

Incision SCX10-III links are not a handling miracle, they are a durability fix. If bent stock links keep costing you alignment and trail time, make the swap and refresh the mounts and hardware while you are in there. If your stock links are straight and your truck drives well, keep them and put the budget toward tires or steering first.