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Tube Fittings (Transitions, etc.)

Ace Race Parts carries a variety of exhaust pipe adapters, connectors, couplers, and other fittings. Our 304 Stainless Steel and 6061 Aluminum Tube Fittings are a high-quality, cost-effective solution for header, exhaust, intake, and downpipe builders. Our 304 Stainless Steel Exhaust Fittings are manufactured to the stringent ASTM A270 Sanitary... Read More

2.000" OD x 1.500" OD 16ga Reducer (2.000" Long) - Brushed Finish - 304 Stainless

SKU 25004
Original price $ 14.25 - Original price $ 14.25
Original price
$ 14.25
$ 14.25 - $ 14.25
Current price $ 14.25
25+ in stock

A SMOOTH, FREE-FLOWING WAY TO STEP UP OR DOWN IN SIZE! The Ace Race Parts brand of 304 Stainless Exhaust Reducers is the fabricator's and manufact...

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2.500" OD x 2.000" OD 16ga Reducer (2.000" Long) - Brushed Finish - 304 Stainless

SKU 25007
Original price $ 15.95 - Original price $ 15.95
Original price
$ 15.95
$ 15.95 - $ 15.95
Current price $ 15.95
Only 14 left!

A SMOOTH, FREE-FLOWING WAY TO STEP UP OR DOWN IN SIZE! The Ace Race Parts brand of 304 Stainless Exhaust Reducers is the fabricator's and manufact...

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2.500" OD x 2.250" OD 16ga Reducer (2.500" Long) - Brushed Finish - 304 Stainless

SKU 25024
Original price $ 12.95 - Original price $ 12.95
Original price
$ 12.95
$ 12.95 - $ 12.95
Current price $ 12.95
25+ in stock

A SMOOTH, FREE-FLOWING WAY TO STEP UP OR DOWN IN SIZE! The Ace Race Parts brand of 304 Stainless Exhaust Reducers is the fabricator's and manufact...

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3.000" OD x 2.000" OD 16ga Reducer (4.000" Long) - Brushed Finish - 304 Stainless

SKU 25009
Original price $ 15.95 - Original price $ 15.95
Original price
$ 15.95
$ 15.95 - $ 15.95
Current price $ 15.95
25+ in stock

A SMOOTH, FREE-FLOWING WAY TO STEP UP OR DOWN IN SIZE! The Ace Race Parts brand of 304 Stainless Exhaust Reducers is the fabricator's and manufact...

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3.000" OD x 2.250" OD 16ga Reducer (2.500" Long) - Brushed Finish - 304 Stainless

SKU 25026
Original price $ 15.95 - Original price $ 15.95
Original price
$ 15.95
$ 15.95 - $ 15.95
Current price $ 15.95
Only 23 left!

A SMOOTH, FREE-FLOWING WAY TO STEP UP OR DOWN IN SIZE! The Ace Race Parts brand of 304 Stainless Exhaust Reducers is the fabricator's and manufact...

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3.000" OD x 2.500" OD 16ga Reducer (2.500" Long) - Brushed Finish - 304 Stainless

SKU 25010
Original price $ 16.95 - Original price $ 16.95
Original price
$ 16.95
$ 16.95 - $ 16.95
Current price $ 16.95
25+ in stock

A SMOOTH, FREE-FLOWING WAY TO STEP UP OR DOWN IN SIZE! The Ace Race Parts brand of 304 Stainless Exhaust Reducers is the fabricator's and manufact...

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3.500" OD x 3.000" OD 14ga Reducer (3.000" Long) - Brushed Finish - 304 Stainless

SKU 25029
Original price $ 17.95 - Original price $ 17.95
Original price
$ 17.95
$ 17.95 - $ 17.95
Current price $ 17.95
25+ in stock

A SMOOTH, FREE-FLOWING WAY TO STEP UP OR DOWN IN SIZE! The Ace Race Parts brand of 304 Stainless Exhaust Reducers is the fabricator's and manufact...

View full details

4.000" OD x 3.000" OD 14ga Reducer (4.000" Long) - Brushed Finish - 304 Stainless

SKU 25012
Original price $ 26.95 - Original price $ 26.95
Original price
$ 26.95
$ 26.95 - $ 26.95
Current price $ 26.95
25+ in stock

A SMOOTH, FREE-FLOWING WAY TO STEP UP OR DOWN IN SIZE! The Ace Race Parts brand of 304 Stainless Exhaust Reducers is the fabricator's and manufact...

View full details

4.000" OD x 3.500" OD 14ga Reducer (3.000" Long) - Brushed Finish - 304 Stainless

SKU 25034
Original price $ 26.95 - Original price $ 26.95
Original price
$ 26.95
$ 26.95 - $ 26.95
Current price $ 26.95
25+ in stock

A SMOOTH, FREE-FLOWING WAY TO STEP UP OR DOWN IN SIZE! The Ace Race Parts brand of 304 Stainless Exhaust Reducers is the fabricator's and manufact...

View full details

5.000" OD x 3.000" OD 14ga Reducer (5.000" Long) - Brushed Finish - 304 Stainless

SKU 25035
Original price $ 37.95 - Original price $ 37.95
Original price
$ 37.95
$ 37.95 - $ 37.95
Current price $ 37.95
25+ in stock

A SMOOTH, FREE-FLOWING WAY TO STEP UP OR DOWN IN SIZE! The Ace Race Parts brand of 304 Stainless Exhaust Reducers is the fabricator's and manufact...

View full details

5.000" OD x 3.500" OD 14ga Reducer (5.000" Long) - Brushed Finish - 304 Stainless

SKU 25036
Original price $ 37.95 - Original price $ 37.95
Original price
$ 37.95
$ 37.95 - $ 37.95
Current price $ 37.95
25+ in stock

A SMOOTH, FREE-FLOWING WAY TO STEP UP OR DOWN IN SIZE! The Ace Race Parts brand of 304 Stainless Exhaust Reducers is the fabricator's and manufact...

View full details

5.000" OD x 4.000" OD 14ga Reducer (5.000" Long) - Brushed Finish - 304 Stainless

SKU 25037
Original price $ 37.95 - Original price $ 37.95
Original price
$ 37.95
$ 37.95 - $ 37.95
Current price $ 37.95
25+ in stock

A SMOOTH, FREE-FLOWING WAY TO STEP UP OR DOWN IN SIZE! The Ace Race Parts brand of 304 Stainless Exhaust Reducers is the fabricator's and manufact...

View full details

2.500" OD x 2.000" OD 16ga Reducer - Polished OD - 6061 Aluminum - (3.000" Long)

SKU 13051
Original price $ 14.50 - Original price $ 14.50
Original price
$ 14.50
$ 14.50 - $ 14.50
Current price $ 14.50
25+ in stock

A SMOOTH, FREE-FLOWING WAY TO STEP UP OR DOWN IN SIZE! The Ace Race Parts brand of 6061-T6 Aluminum Transition Reducers is the fabricator's and ma...

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3.000" OD x 2.500" OD 16ga Reducer - Polished OD - 6061 Aluminum - (3.000" Long)

SKU 13052
Original price $ 15.50 - Original price $ 15.50
Original price
$ 15.50
$ 15.50 - $ 15.50
Current price $ 15.50
Out of stock

A SMOOTH, FREE-FLOWING WAY TO STEP UP OR DOWN IN SIZE! The Ace Race Parts brand of 6061-T6 Aluminum Transition Reducers is the fabricator's and ma...

View full details

3.500" OD x 3.000" OD 16ga Reducer - Polished OD - 6061 Aluminum - (3.000" Long)

SKU 13053
Original price $ 16.00 - Original price $ 16.00
Original price
$ 16.00
$ 16.00 - $ 16.00
Current price $ 16.00
25+ in stock

A SMOOTH, FREE-FLOWING WAY TO STEP UP OR DOWN IN SIZE! The Ace Race Parts brand of 6061-T6 Aluminum Transition Reducers is the fabricator's and ma...

View full details

4.000" OD x 3.000" OD 14ga Reducer - Polished OD - 6061 Aluminum - (3.000" Long)

SKU 13054
Original price $ 16.50 - Original price $ 16.50
Original price
$ 16.50
$ 16.50 - $ 16.50
Current price $ 16.50
Out of stock

A SMOOTH, FREE-FLOWING WAY TO STEP UP OR DOWN IN SIZE! The Ace Race Parts brand of 6061-T6 Aluminum Transition Reducers is the fabricator's and ma...

View full details

4.000" OD x 3.500" OD 14ga Reducer - Polished OD - 6061 Aluminum - (3.000" Long)

SKU 13055
Original price $ 17.00 - Original price $ 17.00
Original price
$ 17.00
$ 17.00 - $ 17.00
Current price $ 17.00
25+ in stock

A SMOOTH, FREE-FLOWING WAY TO STEP UP OR DOWN IN SIZE! The Ace Race Parts brand of 6061-T6 Aluminum Transition Reducers is the fabricator's and ma...

View full details

3.000" OD x 2.500" OD 0.039" (1mm) Reducer CP1 Titanium - (1.188" Long)

SKU 75004
Original price $ 29.99 - Original price $ 29.99
Original price
$ 29.99
$ 29.99 - $ 29.99
Current price $ 29.99
Only 9 left!

ULTRA LIGHTWEIGHT, THIN WALL CP1 TITANIUM TRANSITION REDUCER The Ace Race Parts brand of CP1 Titanium Transition Reducers is the preferred choice ...

View full details

3.500" OD x 3.000" OD 0.039" (1mm) Reducer CP1 Titanium - (1.188" Long)

SKU 75005
Original price $ 34.99 - Original price $ 34.99
Original price
$ 34.99
$ 34.99 - $ 34.99
Current price $ 34.99
Out of stock

ULTRA LIGHTWEIGHT, THIN WALL CP1 TITANIUM TRANSITION REDUCER The Ace Race Parts brand of CP1 Titanium Transition Reducers is the preferred choice ...

View full details

4.000" OD x 3.000" OD 0.039" (1mm) Reducer CP1 Titanium - (2.375" Long)

SKU 75006
Original price $ 48.99 - Original price $ 48.99
Original price
$ 48.99
$ 48.99 - $ 48.99
Current price $ 48.99
Out of stock

ULTRA LIGHTWEIGHT, THIN WALL CP1 TITANIUM TRANSITION REDUCER The Ace Race Parts brand of CP1 Titanium Transition Reducers is the preferred choice ...

View full details

4.000" OD x 3.500" OD 0.039" (1mm) Reducer CP1 Titanium - (2.375" Long)

SKU 75007
Original price $ 39.99 - Original price $ 39.99
Original price
$ 39.99
$ 39.99 - $ 39.99
Current price $ 39.99
Only 4 left!

ULTRA LIGHTWEIGHT, THIN WALL CP1 TITANIUM TRANSITION REDUCER The Ace Race Parts brand of CP1 Titanium Transition Reducers is the preferred choice ...

View full details

Vibrant 3" Oval to 3" OD Round Transition - 6" Long (13170)

SKU VIB13170
Original price $ 54.99 - Original price $ 54.99
Original price
$ 54.99
$ 54.99 - $ 54.99
Current price $ 54.99
Only 5 left!

Tube Diameter - 3.00" Oval to 3" O.D. Round Transition Length - 6" Tube Thickness - 0.065" (1.65mm) T304 Stainless Steel is a non-magnetic alloy th...

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Vibrant 3.5" Oval to 3.5" OD Round Transition - 6" Long (13171)

SKU VIB13171
Original price $ 64.99 - Original price $ 64.99
Original price
$ 64.99
$ 64.99 - $ 64.99
Current price $ 64.99
Out of stock

Tube Diameter - 3.50" Oval to 3.50" O.D. Round Transition Length - 6" Tube Thickness - 0.065" (1.65mm) T304 Stainless Steel is a non-magnetic alloy...

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Vibrant 4" Oval to 4" OD Round Transition - 6" Long (13172)

SKU VIB13172
Original price $ 72.99 - Original price $ 72.99
Original price
$ 72.99
$ 72.99 - $ 72.99
Current price $ 72.99
Only 2 left!

Tube Diameter - 4" Oval to O.D. Round Transition Adapter Length - 6" Tube Thickness - 0.065" (1.65mm) T304 Stainless Steel is a non-magnetic alloy ...

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2.000" OD Double Slip Joint Adapter - Polished OD - 304 Stainless

SKU 25061
Original price $ 31.95 - Original price $ 31.95
Original price
$ 31.95
$ 31.95 - $ 31.95
Current price $ 31.95
25+ in stock

TRUSTED BY THE INDUSTRY'S TOP FABRICATORS AND MANUFACTURERS! The Ace Race Parts line of low-profile Double Slip Joint Adapters feature a 3-piece l...

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2.500" OD Double Slip Joint Adapter - Polished OD - 304 Stainless

SKU 25064
Original price $ 35.95 - Original price $ 35.95
Original price
$ 35.95
$ 35.95 - $ 35.95
Current price $ 35.95
Out of stock

TRUSTED BY THE INDUSTRY'S TOP FABRICATORS AND MANUFACTURERS! The Ace Race Parts line of low-profile Double Slip Joint Adapters feature a 3-piece l...

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3.000" OD Double Slip Joint Adapter - Polished OD - 304 Stainless

SKU 25065
Original price $ 39.95 - Original price $ 39.95
Original price
$ 39.95
$ 39.95 - $ 39.95
Current price $ 39.95
25+ in stock

TRUSTED BY THE INDUSTRY'S TOP FABRICATORS AND MANUFACTURERS! The Ace Race Parts line of low-profile Double Slip Joint Adapters feature a 3-piece l...

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2.500" OD Aluminum Joiner with Bead Rolled Ends - Polished OD - 6061 Aluminum

SKU 14105
Original price $ 11.99 - Original price $ 11.99
Original price
$ 11.99
$ 11.99 - $ 11.99
Current price $ 11.99
25+ in stock

POLISHED ALUMINUM JOINER WITH BEAD ROLLED ENDS The Ace Race Parts brand of Aluminum Joiners are manufactured from 6061 Aluminum and is an excellent...

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3.000" OD Aluminum Joiner with Bead Rolled Ends - Polished OD - 6061 Aluminum

SKU 14106
Original price $ 13.99 - Original price $ 13.99
Original price
$ 13.99
$ 13.99 - $ 13.99
Current price $ 13.99
25+ in stock

POLISHED ALUMINUM JOINER WITH BEAD ROLLED ENDS The Ace Race Parts brand of Aluminum Joiners are manufactured from 6061 Aluminum and is an excellent...

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3.500" OD Aluminum Joiner with Bead Rolled Ends - Polished OD - 6061 Aluminum

SKU 14107
Original price $ 15.75 - Original price $ 15.75
Original price
$ 15.75
$ 15.75 - $ 15.75
Current price $ 15.75
25+ in stock

POLISHED ALUMINUM JOINER WITH BEAD ROLLED ENDS The Ace Race Parts brand of Aluminum Joiners are manufactured from 6061 Aluminum and is an excellent...

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4.000" OD Aluminum Joiner with Bead Rolled Ends - Polished OD - 6061 Aluminum

SKU 14108
Original price $ 15.99 - Original price $ 15.99
Original price
$ 15.99
$ 15.99 - $ 15.99
Current price $ 15.99
25+ in stock

POLISHED ALUMINUM JOINER WITH BEAD ROLLED ENDS The Ace Race Parts brand of Aluminum Joiners are manufactured from 6061 Aluminum and is an excellent...

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Vibrant Slip Joint Adapter for 1.500" OD Tubing (3 Piece Assembly)

SKU VIB13282
Original price $ 33.79 - Original price $ 33.79
Original price
$ 33.79
$ 33.79 - $ 33.79
Current price $ 33.79
Out of stock

The Vibrant Performance 304 Stainless Steel Double Slip Joint Exhaust Fittings are available for 1.500" to 3.000" OD tubing. Ideal for achieving t...

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Vibrant Slip Joint Adapter for 1.750" OD Tubing (3 Piece Assembly)

SKU VIB13284
Original price $ 36.79 - Original price $ 36.79
Original price
$ 36.79
$ 36.79 - $ 36.79
Current price $ 36.79
Out of stock

The Vibrant Performance 304 Stainless Steel Double Slip Joint Fittings are available for 1.500" to 3.000" OD tubing. Ideal for achieving the lowes...

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Vibrant Slip Joint Adapter for 2.000" OD Tubing (3 Piece Assembly)

SKU VIB13286
Original price $ 42.99 - Original price $ 42.99
Original price
$ 42.99
$ 42.99 - $ 42.99
Current price $ 42.99
Only 2 left!

The Vibrant Performance 304 Stainless Steel Double Slip Joint Fittings are available for 1.500" to 3.000" OD tubing. Ideal for achieving the lowes...

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Vibrant Slip Joint Adapter for 2.500" OD Tubing (3 Piece Assembly)

SKU VIB13290
Original price $ 49.99 - Original price $ 49.99
Original price
$ 49.99
$ 49.99 - $ 49.99
Current price $ 49.99
Out of stock

The Vibrant Performance 304 Stainless Steel Double Slip Joint Fittings are available for 1.500" to 3.000" OD tubing. Ideal for achieving the lowes...

View full details

Vibrant Slip Joint Adapter for 3.000" OD Tubing (3 Piece Assembly)

SKU VIB13292
Original price $ 62.99 - Original price $ 62.99
Original price
$ 62.99
$ 62.99 - $ 62.99
Current price $ 62.99
Out of stock

The Vibrant Performance 304 Stainless Steel Double Slip Joint Fittings are available for 1.500" to 3.000" OD tubing. Ideal for achieving the lowes...

View full details

6.000" OD x 5.000" OD 14ga Reducer (5.000" Long) - Brushed Finish - 304 Stainless

SKU 25038
Original price $ 47.95 - Original price $ 47.95
Original price
$ 47.95
$ 47.95 - $ 47.95
Current price $ 47.95
25+ in stock

A SMOOTH, FREE-FLOWING WAY TO STEP UP OR DOWN IN SIZE! The Ace Race Parts brand of 304 Stainless Exhaust Reducers is the fabricator's and manufact...

View full details

5.000" OD x 4.000" OD 14ga Reducer - Polished OD - 6061 Aluminum - (3.000" Long)

SKU 13056
Original price $ 29.50 - Original price $ 29.50
Original price
$ 29.50
$ 29.50 - $ 29.50
Current price $ 29.50
25+ in stock

A SMOOTH, FREE-FLOWING WAY TO STEP UP OR DOWN IN SIZE! The Ace Race Parts brand of 6061-T6 Aluminum Transition Reducers is the fabricator's and ma...

View full details

3.500" OD x 2.000" OD 16ga Reducer - Polished OD - 6061 Aluminum - (3.125" Long)

SKU 13057
Original price $ 24.50 - Original price $ 24.50
Original price
$ 24.50
$ 24.50 - $ 24.50
Current price $ 24.50
25+ in stock

A SMOOTH, FREE-FLOWING WAY TO STEP UP OR DOWN IN SIZE! The Ace Race Parts brand of 6061-T6 Aluminum Transition Reducers is the fabricator's and ma...

View full details

2.500" OD x 2.000" OD 0.039" (1mm) Reducer CP1 Titanium - (1.188" Long)

SKU 75003
Original price $ 26.99 - Original price $ 26.99
Original price
$ 26.99
$ 26.99 - $ 26.99
Current price $ 26.99
Out of stock

ULTRA LIGHTWEIGHT, THIN WALL CP1 TITANIUM TRANSITION REDUCER The Ace Race Parts brand of CP1 Titanium Transition Reducers is the preferred choice ...

View full details

5.000" OD x 4.000" OD 0.039" (1mm) Reducer CP1 Titanium - (2.375" Long)

SKU 75009
Original price $ 59.99 - Original price $ 59.99
Original price
$ 59.99
$ 59.99 - $ 59.99
Current price $ 59.99
Out of stock

ULTRA LIGHTWEIGHT, THIN WALL CP1 TITANIUM TRANSITION REDUCER The Ace Race Parts brand of CP1 Titanium Transition Reducers is the preferred choice ...

View full details

2.500" OD x 2.000" OD 0.047" (1.2mm) Reducer CP1 Titanium - (1.188" Long)

SKU 75015
Original price $ 32.99 - Original price $ 32.99
Original price
$ 32.99
$ 32.99 - $ 32.99
Current price $ 32.99
More on the way!

ULTRA LIGHTWEIGHT, THIN WALL CP1 TITANIUM TRANSITION REDUCER The Ace Race Parts brand of CP1 Titanium Transition Reducers is the preferred choice ...

View full details

3.000" OD x 2.500" OD 0.047" (1.2mm) Reducer CP1 Titanium - (1.188" Long)

SKU 75016
Original price $ 36.99 - Original price $ 36.99
Original price
$ 36.99
$ 36.99 - $ 36.99
Current price $ 36.99
More on the way!

ULTRA LIGHTWEIGHT, THIN WALL CP1 TITANIUM TRANSITION REDUCER The Ace Race Parts brand of CP1 Titanium Transition Reducers is the preferred choice ...

View full details

3.500" OD x 3.000" OD 0.047" (1.2mm) Reducer CP1 Titanium - (1.188" Long)

SKU 75017
Original price $ 41.99 - Original price $ 41.99
Original price
$ 41.99
$ 41.99 - $ 41.99
Current price $ 41.99
More on the way!

ULTRA LIGHTWEIGHT, THIN WALL CP1 TITANIUM TRANSITION REDUCER The Ace Race Parts brand of CP1 Titanium Transition Reducers is the preferred choice ...

View full details

4.000" OD x 3.000" OD 0.047" (1.2mm) Reducer CP1 Titanium - (2.375" Long)

SKU 75018
Original price $ 59.99 - Original price $ 59.99
Original price
$ 59.99
$ 59.99 - $ 59.99
Current price $ 59.99
More on the way!

ULTRA LIGHTWEIGHT, THIN WALL CP1 TITANIUM TRANSITION REDUCER The Ace Race Parts brand of CP1 Titanium Transition Reducers is the preferred choice ...

View full details

4.000" OD x 3.500" OD 0.047" (1.2mm) Reducer CP1 Titanium - (2.375" Long)

SKU 75019
Original price $ 46.99 - Original price $ 46.99
Original price
$ 46.99
$ 46.99 - $ 46.99
Current price $ 46.99
More on the way!

ULTRA LIGHTWEIGHT, THIN WALL CP1 TITANIUM TRANSITION REDUCER The Ace Race Parts brand of CP1 Titanium Transition Reducers is the preferred choice ...

View full details

5.000" OD x 4.000" OD 0.047" (1.2mm) Reducer CP1 Titanium - (2.375" Long)

SKU 75021
Original price $ 71.99 - Original price $ 71.99
Original price
$ 71.99
$ 71.99 - $ 71.99
Current price $ 71.99
More on the way!

ULTRA LIGHTWEIGHT, THIN WALL CP1 TITANIUM TRANSITION REDUCER The Ace Race Parts brand of CP1 Titanium Transition Reducers is the preferred choice ...

View full details