Carburetor Adapters and Spacers
Circle Track Race Car Carburetor Adapters & Spacers at JJ Motorsports
Adapt your circle track race car's carburetor setup with premium adapters and spacers from JJ Motorsports, designed for precise flange matching, improved airflow, and customizable height in high-RPM racing conditions. These high-quality aluminum spacers and adapter plates ensure secure mounting, reduced turbulence, and reliable performance for dirt track, oval, and stock car applications, helping you achieve better throttle response and power delivery on the track.
Shop top brands like Allstar Performance and Holley for race-proven reliability. Explore related categories such as Circle Track Carburetors & Components, Circle Track Air & Fuel, or Circle Track Racing for jets, intakes, and exhaust to complete your carburetion setup and dominate the track with total confidence across all race conditions, from short ovals to high-bank superspeedways.
Top Circle Track Race Car Carburetor Adapters & Spacers
- Holley Carburetor Spacer 1/4in Phenolic 20-99 – Phenolic 1/4" spacer for Holley 4150 carbs; reduces heat soak and improves velocity.
- Allstar Performance Carburetor Adapter Plate ALL75071 – Billet adapter for 4150 to 4500 flange; precision CNC-machined for leak-free fit.
- Quick Fuel Carburetor Spacer 1/2in Aluminum QFT-30-129 – Aluminum 1/2" spacer for Q-Series carbs; enhances plenum volume for better distribution.
Browse our in-stock inventory below with same-day shipping and expert support. Free shipping on orders over $99! Questions? Contact us for fitment advice!
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
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Canton 1in Phenolic Blended 4-Hole Carb Spacer 85-158
CANTON
$96.00A quality carburetor spacer isn't just a shim—it's a tuning tool that improves fuel distribution, reduces heat soak, and increases air velocity for better atomization. The Canton 1-inch phenolic spacer isolates your carb from intake manifold heat while...CAN85-158- SKU:
- CAN85-158
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- MFG Part #:
- 85-158
$96.00 -
Canton Phenolic Carb Spacer - 1/4 Thick 4-Hole 85-154
CANTON
$35.00Phenolic carb spacers are essential for controlling intake manifold heat and preventing fuel vapor lock in high-performance applications. By isolating your carburetor from engine heat, this spacer maintains consistent fuel temperature and improves...CAN85-154- SKU:
- CAN85-154
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
- MFG Part #:
- 85-154
$35.00 -
Canton Phenolic 1/2in 4 Hole 85-152
CANTON
$45.00A quality carburetor spacer is essential for optimizing fuel distribution, managing intake temperatures, and maintaining consistent jetting across varying engine conditions. The Canton Phenolic 85-152 delivers proven thermal isolation and reliability at...CAN85-152- SKU:
- CAN85-152
- Availability:
- Ships Same Business Day
- Weight:
- 0.62 LBS
- MFG Part #:
- 85-152
$45.00 -
Canton Phenolic 1in 4 Hole 85-150
CANTON
$74.00A carburetor spacer is essential for optimizing fuel distribution and engine temperature management in high-performance applications. The Canton Phenolic 1in 4 Hole spacer isolates your carb from direct engine heat while providing a stable mounting...CAN85-150- SKU:
- CAN85-150
- Availability:
- Ships Same Business Day
- Weight:
- 1.11 LBS
- MFG Part #:
- 85-150
$74.00 -
Canton Phenolic Adapter 85-070
CANTON
$96.00The Canton Phenolic Adapter 85-070 solves a critical fitment challenge when adapting Holley 2-barrel carburetors to spread-bore manifolds. Phenolic construction provides superior thermal insulation compared to aluminum, reducing heat transfer to the...CAN85-070- SKU:
- CAN85-070
- Availability:
- Ships Same Business Day
- Weight:
- 2.14 LBS
- MFG Part #:
- 85-070
$96.00 -
Canton Phenolic 2bbl. Adaptor 85-065
CANTON
$74.00If you're running a Holley 2-barrel carb on a square-bore intake, this Canton phenolic adaptor solves a critical fitment gap while isolating carburetor heat from your fuel system. The 1-inch phenolic construction provides excellent thermal insulation,...CAN85-065- SKU:
- CAN85-065
- Availability:
- Ships Same Business Day
- Weight:
- 1.53 LBS
- MFG Part #:
- 85-065
$74.00Qty in Cart: 0Quantity:Price:$74.00Subtotal: -
Canton Phenolic Adapt 2bbl/4bbl 85-060
CANTON
$96.00If you're adapting a Holley 2-barrel carburetor to a square-bore manifold, a quality spacer isn't just a convenience—it's essential for proper fuel delivery and heat management. The Canton Phenolic Adapt eliminates manifold mismatch issues while the...CAN85-060- SKU:
- CAN85-060
- Availability:
- Ships Same Business Day
- Weight:
- 2.19 LBS
- MFG Part #:
- 85-060
$96.00 -
Canton Carburetor Spacer 85-050
CANTON
$74.00The Canton Carburetor Spacer 85-050 is essential for seamlessly adapting Holley 2-barrel carburetors to Rochester 2-barrel intake manifolds, eliminating fitment guesswork and ensuring proper fuel delivery geometry. Built from phenolic material, this...CAN85-050- SKU:
- CAN85-050
- Availability:
- Ships Same Business Day
- Weight:
- 1.45 LBS
- MFG Part #:
- 85-050
$74.00 -
Canton Phenolic Adapter 1in Holley 2 bbl. 85-040
CANTON
$55.00A carburetor spacer isn't just filler—it's a tuning tool that improves fuel atomization, reduces heat transfer to the intake manifold, and allows for better air-fuel mixture distribution. The Canton Phenolic Adapter isolates your Holley 2-barrel carb...CAN85-040- SKU:
- CAN85-040
- Availability:
- Ships Same Business Day
- Weight:
- 1.22 LBS
- MFG Part #:
- 85-040
$55.00 -
Canton Phenolic Rochester 2bbl. 85-030
CANTON
$45.00A carburetor spacer is a critical component for optimizing air intake temperature and fuel atomization in your Rochester 2-barrel setup. The Canton phenolic material provides superior insulation compared to aluminum, reducing heat transfer from your...CAN85-030- SKU:
- CAN85-030
- Availability:
- Ships Same Business Day
- Weight:
- 0.54 LBS
- MFG Part #:
- 85-030
$45.00 -
Allstar Performance Base Plate Insert 1.400 4pk for 1/2in Spacer ALL26189
ALLSTAR PERFORMANCE
$38.99Keep your restrictor plate setup running at peak performance with the Allstar Performance Base Plate Insert 1.400 4pk (ALL26189). Precision-machined from quality aluminum, these inserts are designed for a perfect fit with Allstar's 1/2 in restrictor...ALL26189- SKU:
- ALL26189
- Availability:
- Ships Same Business Day
- Weight:
- 0.17 LBS
- MFG Part #:
- ALL26189
$38.99 -
Allstar Performance Base Plate Insert 1.350 4pk for 1/2in Spacer ALL26188
ALLSTAR PERFORMANCE
$38.99Keep your engine running at peak performance with the Allstar Performance Base Plate Insert 1.350 4pk (ALL26188) — precision-engineered aluminum inserts designed to deliver consistent, reliable airflow restriction every time you hit the track. Built to...ALL26188- SKU:
- ALL26188
- Availability:
- Ships Same Business Day
- Weight:
- 0.18 LBS
- MFG Part #:
- ALL26188
$38.99 -
Allstar Performance Base Plate Insert 1.300 4pk for 1/2in Spacer ALL26187
ALLSTAR PERFORMANCE
$38.99Keep your engine running at peak performance with the Allstar Performance Base Plate Insert 1.300 4pk (ALL26187) — a precision-engineered solution designed to deliver consistent, reliable airflow restriction every time you hit the track. Built from...ALL26187- SKU:
- ALL26187
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- MFG Part #:
- ALL26187
$38.99 -
Allstar Performance Base Plate Insert 1.250 4pk for 1/2in Spacer ALL26186
ALLSTAR PERFORMANCE
$38.99Keep your engine performing at its best with the Allstar Performance Base Plate Insert 1.250 4pk (ALL26186) — a precision-engineered solution designed to give you reliable, consistent airflow control every time you hit the track. Built from quality...ALL26186- SKU:
- ALL26186
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
- MFG Part #:
- ALL26186
$38.99 -
Allstar Performance Base Plate Insert 1.200 4pk for 1/2in Spacer ALL26185
ALLSTAR PERFORMANCE
$38.99When precision airflow control matters most, the Allstar Performance Base Plate Insert ALL26185 delivers exactly what serious racers need. Engineered to fit seamlessly with Allstar's 1/2 in restrictor plate, these aluminum inserts help you dial in...ALL26185- SKU:
- ALL26185
- Availability:
- Ships Same Business Day
- Weight:
- 0.22 LBS
- MFG Part #:
- ALL26185
$38.99 -
Allstar Performance Base Plate Insert 1.150 4pk for 1/2in Spacer ALL26184
ALLSTAR PERFORMANCE
$38.99Keep your engine breathing right and your setup dialed in with the Allstar Performance Base Plate Insert 1.150 for 1/2in Spacer (ALL26184). These precision-machined aluminum inserts are a must-have for any serious racer running a restrictor plate setup,...ALL26184- SKU:
- ALL26184
- Availability:
- Ships Same Business Day
- Weight:
- 0.23 LBS
- MFG Part #:
- ALL26184
$38.99 -
Allstar Performance Base Plate Insert 1.100 4pk for 1/2in Spacer ALL26183
ALLSTAR PERFORMANCE
$38.99Keep your engine running at peak performance with the Allstar Performance Base Plate Insert ALL26183 — precision-engineered aluminum inserts designed to deliver consistent, reliable airflow restriction every time. Whether you're prepping for your next...ALL26183- SKU:
- ALL26183
- Availability:
- Ships Same Business Day
- Weight:
- 0.24 LBS
- MFG Part #:
- ALL26183
$38.99 -
Allstar Performance Base Plate Insert 1.000 4pk for 1/2in Spacer ALL26182
ALLSTAR PERFORMANCE
$38.99Keep your engine's air-fuel mixture dialed in with precision using the Allstar Performance Base Plate Insert 1.000 4pk (ALL26182). Engineered specifically for Allstar's 1/2" restrictor plates, these aluminum inserts are a must-have for racers who demand...ALL26182- SKU:
- ALL26182
- Availability:
- Ships Same Business Day
- Weight:
- 0.26 LBS
- MFG Part #:
- ALL26182
$38.99 -
Allstar Performance Base Plate Insert .950 4pk for 1/2in Spacer ALL26181
ALLSTAR PERFORMANCE
$38.99Keep your restrictor plate setup dialed in with the Allstar Performance Base Plate Insert .950 4pk (ALL26181) — a must-have for racers who demand precision and reliability every time they hit the track. These aluminum inserts drop right into your Allstar...ALL26181- SKU:
- ALL26181
- Availability:
- Ships Same Business Day
- Weight:
- 0.27 LBS
- MFG Part #:
- ALL26181
$38.99 -
Allstar Performance Adjustable Base Plate 1/2in ALL26180
ALLSTAR PERFORMANCE
$76.99Fine-tune your carburetor setup with confidence using the Allstar Performance Adjustable Base Plate (ALL26180) — a precision-crafted restrictor plate designed to give you maximum control over airflow and fuel delivery. Built from lightweight, durable...ALL26180- SKU:
- ALL26180
- Availability:
- Ships Same Business Day
- Weight:
- 1.04 LBS
- MFG Part #:
- ALL26180
$76.99
