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HPS Step Up Transition Aluminum Joiner (STEP-AT400-450)
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HPS Performance

HPS Step Up Transition Aluminum Joiner, 4" - 4-1/2" (102mm - 114mm) (STEP-AT400-450)

SKUSTEP-AT400-450
$35.11
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About: HPS Step Up Transition Aluminum Joiner, 4" - 4-1/2" (102mm - 114mm) (STEP-AT400-450)
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OD: 4" - 4-1/2". Length: 7". Wall Thickness: 2mm. HPS 6061 Aluminum Step Up Transition Joiner is commonly used in industrial, automotive, marine and aerospace applications. This product is ideal for custom fabrication projects such as DIY welding, high performance air intakes, cooling radiator and heater systems, turbo intercooler piping and reducing tubing setups.

Features

  • Tubing outside diameter: 4 - 4-1/2 inch (102mm - 114mm). Length: 7 inch.
  • Material: 6061-T6 aluminum. Wall thickness: 2mm.
  • Tubing inside diameter: 3-7/8 - 4-5/16 inch (98mm - 110mm).
  • Commonly used in industrial, automotive, marine and aerospace applications. Great for custom fabrication, DIY projects, and welding.
  • Build your high performance air intake, cooling radiator and heater system, turbo intercooler piping and reducing tubing setup.

Specifications

Product Type Step Up Transition Aluminum Joiner
Material 6061 Aluminum
Color / Finish Mill Finish
Outside Diameter (inch) 4" - 4-1/2"
Outside Diameter (mm) 102mm - 114mm
Outside Diameter 4" - 4.5" (102mm - 114mm)
Length / Leg Length 7"
BrandHPS Performance
TypeStep Up Transition Aluminum Joiner
SKUSTEP-AT400-450
Weight1.13 lb

Shipping: Some items may qualify for free shipping with Local Pickup in store. All orders have a 2–3 business day processing time. Some orders may have extended shipping times based on current stock status — we'll confirm the lead time at order placement.

Returns: Accepted within 30 days of delivery for unused product in original packaging. Returns are subject to a 25% Restocking Fee. Special-order and custom-built items are final sale.

Warranty: All products carry the manufacturer's full warranty. Coverage is honored through PMD as your authorized dealer.

A tracking link is emailed automatically when your order ships. You can also log into your account at any time to view live order status.
Yes — we ship to most international destinations. Duties and taxes are calculated at checkout. Lead times vary by carrier and customs processing.
Inspect your shipment on delivery. If anything is damaged, photograph it before signing and contact us within 48 hours — we'll work with the carrier to resolve it at no cost to you.

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