4 Inch Diameter

4 Inch Air Intake Hoses

4 Inch Air Intake Pipes

4 Inch Brackets

4 Inch Clamps

4 Inch Couplers & Connectors

4 Inch Diverter Boxes

4 Inch Other Products

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Grand Rock 3530109C1 International 9400-9900 Exhaust Y-Pipe IH-0109C1

MSRP: $579.00

$397.00

Grand Rock 598275C1 International Chrome Elbow Reduced 5" to 4" IH-275-5C

MSRP: $509.00

$379.00

Grand Rock 598275C1 International Chrome Elbow Reduced 6" to 4" IH-275-6C

MSRP: $613.00

$423.00

Grand Rock 598275C1 International Chrome 4" Exhaust Elbow IH-275-C1

MSRP: $403.00

$313.00

Grand Rock 598281C1 International 9300 Exhaust Elbow Pipe IH-281C1

MSRP: $306.00

$226.00

Grand Rock 598286C1 International 9300 5"to 4" Exhaust Y-Pipe IH-286C1

MSRP: $433.00

$283.00

Grand Rock 1673833C1 International 8100 Day cab Exhaust Elbow IH-3833C1

MSRP: $308.00

$188.00

IM-418 4 inch x 18 inch Internal Exhaust Baffle Tube (Pair)

Grand Rock 4 inch x 18 inch Internal Exhaust Baffle Tube (PAIR) IM-418

MSRP: $299.00

$218.00

Grand Rock 4" x 12" Curved ID Aluminized Stack Exhaust Pipe K4-12EXA

MSRP: $101.00

$71.00

4" x 12" ID Curved Chrome Exhaust Stack Pipe K4-12EXC

Grand Rock 4" x 12" Curved Chrome Exhaust Stack Pipe ID End K4-12EXC

MSRP: $193.00

$143.00

Grand Rock 4" x 12" Curved Top Aluminized Stack OD End K4-12SBA

MSRP: $101.00

$71.00

Grand Rock 4" x 12" Curved OD Chrome Exhaust Stack pipe K4-12SBC

MSRP: $183.00

$133.00

633 products total