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Exhaust Pipe Adapters, Connectors, Couplers, & More Fittings– Translation missing: en.general.meta.tags– Ace Race Parts Skip to content
⚠️ Due to high order volume, please allow 2-3 business days for order processing. Expedited orders (UPS Next Day, 2-Day, and 3-Day) will ship the same day if received before 12:00 PM Pacific Time. Thank you for your patience and understanding. ⚠️
⚠️ Due to high order volume, please allow 2-3 business days for order processing. Expedited orders (UPS Next Day, 2-Day, and 3-Day) will ship the same day if received before 12:00 PM Pacific Time. Thank you for your patience and understanding. ⚠️

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
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
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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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
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
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
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 2.500" 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
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
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...

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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
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...

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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
Current price
$ 26.95
Only 25 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...

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
Current price
$ 37.95
Only 1 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...

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
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
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...

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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
Current price
$ 54.99
Out of stock

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
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
Current price
$ 72.99
Out of stock

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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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
Current price
$ 47.95
Only 7 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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Spring/Tab Set - 2 Tabs, 1 Spring - Spring Length 3.750" OAL - 304 Stainless

SKU 25100
Original price $ 6.99 - Original price $ 6.99
Original price
$ 6.99
$ 6.99
Current price
$ 6.99
Out of stock

SPRING & TAB SET FOR SLIP JOINT SLEEVES — 304 STAINLESS Ace Race Parts' Spring & Tab Sets for Slip Joint Adapters feature a pair of 304 Sta...

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