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Proline Big Bore Scaler Shocks (4) for TRX-4M (Proline 639200 | PRO639200)

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Model: Proline 639200
Dist. #: PRO639200   SKU: PRO639200

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Store Pickup:

South Jordan, UT
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List Price:  $62.49
Price:  $44.99
You Save:  $17.5 (28%)

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Updated on Jul 16, 2026 05:13:20 PM










Overview


This a set of Big Bore Scaler Shocks, designed specifically for the TRX-4M™. Take your TRX-4M™ to the next level of performance in Pro-Line Style! Just like our best-selling 1/10 version, these miniature Big Bore Scaler Shocks feature CNC machined Aluminum Shock Caps, Threaded Bodies, Bottom Caps, and Polished Steel Shock Shafts for added style and durability over the stock shocks. A double O-ring seal on the main shaft eliminates leaks and provides a smooth, low-friction shock action.


The Big Bore Shocks come pre-assembled in a set of 4 with all mounting hardware included. All you need to do is unscrew the top cap and add silicone shock oil (20wt recommended) to fill the shock body. Replace the cap and compress the shock 3-4 times to fully lubricate the shock shaft. Now you're ready to start your next small-scale adventure!


Three spring rates are included with these shocks: Green (Soft) for the front, Yellow (Medium) for the rear, and optional Red springs (Hard) for heavier bodies or just to tune to your specific conditions. It includes all hardware needed to mount up to your TRX-4M™.  Don't miss out on the coolest looking and best performing mini shocks on the Planet, Get your own Pro-Line Big Bore Scaler Shocks today!


PRO639200 | Big Bore Scaler Shocks (4) for TRX-4M™


 











Features






  • Ultimate Performance TRX-4M™ Shocks

  • CNC Machined Aluminum Shock Caps, Bodies, and Bottom Caps

  • True Big Bore Holds More Oil for Better Performance

  • Pre-Assembled, Just Add Oil! (20wt Oil Recommended)

  • Leak-free Double O-Ring Seal

  • Polished Steel Shock Shaft

  • Optional Stiff Springs Included









Fits






  • TRX-4M™







Specs







Extended Length:

52mm (eye-to-eye)



Collapsed Length:

36mm (eye-to-eye)



Stroke:

14mm



Spring Length:

34mm



Spring Range:

Green (Stock Front): Soft


Yellow (Stock Rear): Medium


Red (Optional): Hard












Frequently Bought Together

Proline Big Bore Scaler Shocks (4) for TRX-4M
+
Proline 1/24 Trencher Fr/Rr 1.0" Tires Mounted 7mm Black Impulse (4): SC
+
Injora Utility Plastic Trailer with Hitch for 1/18 RC Crawler TRX4M
This Item: Proline Big Bore Scaler Shocks (4) for TRX-4M
$44.99
Proline 1/24 Trencher Fr/Rr 1.0" Tires Mounted 7mm Black Impulse (4): SC
$24.99
Injora Utility Plastic Trailer with Hitch for 1/18 RC Crawler TRX4M
$29.99

Total Price: $99.97

Add All Three To Cart
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