ACUITY Instruments: Performance Automotive Products

6” to 3.5” Aluminum Velocity Stack

6” to 3.5” Aluminum Velocity Stack - Main image
$32.4 $45 In stock

Category: Automotive Parts and Accessories

SKU: 1949-VS01
  • 6" (152mm) inlet with barb feature to help better secure air filter
  • Reduces to 3.5" (89mm) outlet
  • 2.35" (58mm) overall height
  • Parabolic reduction for improved flow
  • 5052 aluminum construction with matte black coating for corrosion resistance
  • Great for adapting a  6" filter to a 3.5" pipe or for reducing turbo inlet losses

Description

Spun from 5052 aluminum to a parabolic profile, this velocity stack is a great way to adapt a filter with 6" (152mm) opening to a 3.5" tube or to simply reduce inlet losses on a 3.5" (89mm) tube or turbo inlet. Often, spun velocity stacks don't feature beads to help retain filters, leading to poor filter fitment. And with its 1.3mm (0.05") wall thickness, it's perfect for welding to industry-standard 0.060"-wall aluminum tubing if making a custom intake setup. ACUiTY's velocity stacks feature a rolled bead on the large end and a flared outlet on the small end to make sure your filter and coupler stay attached. Additionally, a durable, matte black, painted coating is applied to each velocity stack for corrosion protection. 

Fitment

Compatible with cone-style air filters with a 6" inside diameter and 3.5" inside diameter silicone couplers

Contents

  • (1) Aluminum velocity stack
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Customer Reviews (4.6 / 5 · 5 reviews)

Hannah E. ★★★★★

The parabolic shape fits my carburetor perfectly and the 6-inch inlet makes my air filter sit securely without any wobble. Machining on the 5052 aluminum is clean with no sharp edges, exactly what I needed for my build.

Joshua ★★★★★

I was a bit skeptical about the barb feature, but my air filter now fits perfectly snug without any extra clamps. The 5052 aluminum feels solid and the parabolic shape made installation straightforward.

Leo ★★★★★

Swapped this onto my intake and the 6" inlet with the barb holds my filter way tighter than the old clamp setup. The 3.5" outlet bolted right up with no adapter, and the 5052 aluminum feels solid without adding much weight.