

6343-00
Pro-Line Big Bore Scaler Shocks (90mm) (2)
Pro-Line Big Bore Scaler Shocks (90mm) (2)
This is a set of two Pro-Line 90mm Big Bore Scaler Shocks. The large (nearly 11mm) bore allows the Big Bore Shocks to function correctly as true performance shocks due to the larger oil volume in the shock body. The shocks feature CNC machined Aluminum Shock Caps, Collars, Bodies, Bottom Caps, and Hard Chrome Coated Steel Shock Shafts all made to exacting tolerances. X-Ring seals (PRO6343-01 for replacements) are used as the main shaft seal for smooth, low friction action and to prevent leaks.
The Big Bores are stylish with Chrome and Black anodizing and a large P-L logo engraved into the shock cap. Pro-Line also engineered an updated dual-rate spring design made from a single spring that saves space and has incredible scale looks and performance. Optional softer and firmer dual-rate springs are available in the Big Bore Scaler Shock Spring Assortment (6343-02). The lower spring perch is captured, so you always know it will stay where it belongs. From the top mounting hole to the bottom mounting hole, these Big Bore Scaler Shocks measure out to be 90mm at full extended length and collapse down to about 64mm (when the rubber bump stop is removed) and they include extra 5mm longer Shock Ends to increase the shock length. The Big Bores come mostly pre-built (just add oil) and are designed to fit many popular crawler vehicles.
- Best Performing Scale Shocks Pro-Line Has Ever Made
- Big Bore Holds More Oil for Better Performance
- Pre-Assembled, Just Fill and Go
- Single Low Friction X-Ring Seal Prevents Leaks
- CNC Machined Parts Made to Exacting Tolerances
- Optional +5mm Shock Ends Included
- Dual Rate Single Spring Design
- Hard Chrome Coated Shock Shaft
- Captured Lower Spring Perch
- Rebuild Kit and Spring Assortment Sold Separately
- (2) Big Bore Scaler Shocks (90mm-95mm)
- (2) +5mm Shock Ends
- (2) Standard Upper Pivot Balls
- (4) Captured Upper Pivot Balls
- (4) Metal Mounting Washers
- (8) Optional 1mm and 2mm Plastic Internal Shock Limiters
Pairs well with
Easy to use for beginners
Durable build for long-lasting fun
Quick recharge and extended range for all-day play
Perfect for pools, lakes, and calm rivers

Pro-Line Big Bore Scaler Shocks (90mm) (2)
Product details
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What types of RC vehicles do you sell?
We offer a wide range of RC vehicles including airplanes, drones, helicopters, cars, trucks, boats, and a full selection of parts and upgrades for each.
Are your products ready to run (RTR) or require assembly?
Most of our models are RTR (Ready to Run) or RTF (Ready to Fly), meaning they include everything you need out of the box. Some kits may require minimal assembly—check the product description for details.
Do you offer replacement parts?
Yes! We stock replacement parts for most models we sell. If you’re not sure which part you need, contact our support team and we’ll help you find the right match.
How long does shipping take?
Orders typically ship within 1–2 business days. Delivery time depends on your location, but most customers in the U.S. receive their orders within 3–7 business days.
Do you ship internationally?
At the moment, we primarily ship within the U.S., but international shipping is available on select items. Please contact us for a custom quote.
























