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Dynatech® 783-71241 Coated Slip-On Collector, 2-1/4 x 4 x 12
Dynatech® 783-71241 Coated Slip-On Collector, 2-1/4 x 4 x 12

Dynatech® 783-71241 Coated Slip-On Collector, 2-1/4 x 4 x 12

Universal Fit, 12" Overall Length, 12" Collector Length, 4 Inch Collector Diameter

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Dynatech® 783-71241 Coated Slip-On Collector, 2-1/4 x 4 x 12
Dynatech® 783-71241 Coated Slip-On Collector, 2-1/4 x 4 x 12
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We estimate this item will ship on or before November 20th.
Part # 31178371241
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Important Messages:

  • This item ships directly from the manufacturer. It may take an additional 1 business days for Dynatech to ship this item.
  • Get FREE shipping when your order includes this item and exceeds $99! Ground shipping only in the contiguous US.
  • This item ships via Ground Shipping only. Expedited and Air shipping options are not available.


MFG. Part #:
Overall Length:
Collector Length:
Collector Diameter:
4 Inch
Ceramic Coated
Sold in Quantity:
Primary Tube Diameter:


Dynatech® slip-on race collectors offer great performance at an affordable price. Changing collector outlet size or length are popular ways to make tuning adjustments as track conditions change (i.e. changing to a larger collector outlet size can aid in "slick track" conditions).

  • Direct bolt-on fit to all Dynatech® Drag Headers
  • Durable Ceramic coating
  • Long-transition 4-into-1 design for maximum power
  • 18mm accessory bung (see Notes)
  • Listed by Primary I.D. x Collector O.D. x Length
  • Sold individually


A unique feature is the pan e-vac bung installed on all Ceramic Coated slip-on collectors. By using an 18mm thread, you have the option to use the included threaded adapter for your breather line hook-up, or oxygen sensors found on fuel injection and air/fuel ratio meters.

Bung Accessory Hook-Up (Link)

Some parts are not legal for use in California or other states with similar laws/regulations

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