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308VS EC Tillotson HL-357 Velocity Stack
308VS EC Infinite Radius Velocity Stack
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308VS EC Tillotson HL-357 Velocity Stack

Part Number: 308VS
Online Price: $24.99
Velocity Stack Infinite Radius HL-357
Availability: In Stock.

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Description

308VS EC Billet Velocity Stack – Fits Tillotson HL-357 & HL-352A


The 308VS EC Velocity Stack is designed to enhance the airflow and throttle response of your Tillotson HL-series carburetor. Featuring a precisely radiused bellmouth, this stack increases air velocity and strengthens the fuel signal, improving overall engine performance.


Engineered for competitive use, this velocity stack is a superior alternative to basic filter adapters in classes where it’s permitted. CNC-machined from 6061-T6 billet aluminum, each unit offers exceptional durability, precise fitment, and a high-performance finish. All necessary mounting hardware is included.


Velocity stacks are only legal in certain racing classes. Please consult your rulebook before ordering.


Fitment Details:

  • Compatible with: Tillotson HL-357A, HL-357B, HL-352A
  • Approximate Dimensions: 2.5" OD × 0.913" ID
  • Bolt Spacing: 1.375" (fitted for 10-32 hardware)
  • Check your air filter size for proper fitment

FAQ

What carburetors is the 308VS EC Velocity Stack compatible with?

It’s designed to fit Tillotson HL-357A, HL-357B, and HL-352A carburetors.


What does a velocity stack do?

A velocity stack smooths and accelerates incoming airflow, improving throttle response, fuel signal, and engine performance—especially in high-RPM racing applications.


What material is it made from?

Each 308VS is CNC-machined from 6061-T6 billet aluminum, offering excellent strength, heat resistance, and longevity.


What are the dimensions?

  • Outer Diameter: 2.5"
  • Inner Diameter: 0.913"
  • Bolt Spacing: 1.375" (uses 10-32 thread bolts)
    Always verify fitment against your air filter before ordering.


Is this legal in all kart racing classes?

No, velocity stacks are only legal in certain classes. Always check your rulebook before installing or competing.

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