Brakes
Circle Track Brakes & Components for IMCA, Late Models at JJ Motorsports
Achieve precise stopping power and superior control on the track with premium circle track brakes from JJ Motorsports. Our selection includes brake kits, rotors, hubs, calipers, master cylinders, and cooling systems designed for late models, modifieds, street stocks, and IMCA dirt racing. Built for reliability, high performance, and durability under intense racing conditions, these components ensure consistent braking and safety.
Shop trusted brands like Wilwood for top-quality hubs and rotors. Explore related categories such as circle track suspension and components for handling upgrades or circle track air and fuel for engine performance.
Top Circle Track Brake Products
- IMCA Mustang II Spindles with Hybrid 10" Rotor Kit 5x5 – Kit includes LH & RH IMCA Mustang II spindles, caliper brackets, hardware, rotor bearings, seals, and 10" hybrid style rotors with studs; ideal for IMCA dirt modifieds with 5x5 bolt pattern.
- Aluminum Wilwood Wide 5 Front Wheel Hub, Low-Drag REM Bearings, Races, Kit – Kit features Wilwood Starlite 55 hub assembly with studs, REM finished inner/outer bearings, low-drag seal, and bearing races; aluminum construction for wide 5 applications.
- 5x5 Grand National Full Floating Rear End Hub Kit – Lightweight Steel with Bearings & Hardware – Lightweight steel hub with black oxide coating, 5x5 bolt pattern, 24-spline drive flange, 2.5-inch ID tapered bearings, seals, and hardware; fits full floater rear axles with 2.5-inch ends.
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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Wilwood GT 48 Passenger Side Directional Slotted Brake Rotor 12.19" x 1.25" 8 x 7.000" Bolt Pattern 160-11839
WILWOOD
$220.50If you're serious about braking performance, rotor quality directly impacts your ability to modulate pressure, dissipate heat, and maintain consistency through repeated hard stops. The Wilwood GT 48 Passenger Side Directional Slotted Brake Rotor delivers...WIL160-11839- SKU:
- WIL160-11839
- Availability:
- Ships Same Business Day
- Weight:
- 13.88 LBS
- MFG Part #:
- 160-11839
$220.50 -
Wilwood HD 48 Curved Vane Spec-37 Driver Side Brake Rotor 12.19" x 1.25" 8 x 7" Bolt Pattern 160-11836
WILWOOD
$198.45Brake fade and rotor warping are performance killers on the track and in demanding street applications. The Wilwood HD 48 Curved Vane Spec-37 rotor is engineered with high-iron thermal capacity to dissipate heat efficiently and maintain consistent...WIL160-11836- SKU:
- WIL160-11836
- Availability:
- Ships Same Business Day
- Weight:
- 13.70 LBS
- MFG Part #:
- 160-11836
$198.45 -
Wilwood HD 48 Curved Vane Rotor 12.19 x 1.25 RH 8 x 7.00 WIL160-11835
WILWOOD
$198.45When you're pushing your vehicle to its limits, brake fade becomes your enemy. The Wilwood HD 48 Curved Vane Rotor delivers the thermal management and stopping power needed for sustained high-performance driving, whether you're on the track or tackling...WIL160-11835- SKU:
- WIL160-11835
- Availability:
- Ships Same Business Day
- Weight:
- 13.84 LBS
- MFG Part #:
- 160-11835
$198.45 -
Wilwood 12in x 0.350in Drilled Steel Rotor 8 x 7 Bolt Pattern 160-0525
WILWOOD
$125.68Brake fade under sustained track conditions kills lap times and compromises safety—this Wilwood rotor eliminates that problem through engineered heat dissipation. The drilled steel construction pulls thermal energy away from the friction surface,...WIL160-0525- SKU:
- WIL160-0525
- Availability:
- Ships Same Business Day
- Weight:
- 5.49 LBS
- MFG Part #:
- 160-0525
$125.68 -
Wilwood 12 x 0.310 Drilled Steel Rotor 8 x 7.620 Bolt Pattern 160-0495
WILWOOD
$125.68When you're pushing your sprint or modified to the limit, brake performance becomes non-negotiable. This Wilwood drilled rotor dissipates heat faster than solid designs, keeping your stopping power consistent through multiple heat cycles. The...WIL160-0495- SKU:
- WIL160-0495
- Availability:
- Ships Same Business Day
- Weight:
- 4.64 LBS
- MFG Part #:
- 160-0495
$125.68 -
Wilwood PolyMatrix H Compound Brake Pads 0.80" Thick for Superlite 4/6 Calipers 15H-8114K
WILWOOD
$263.28If you're running Wilwood Superlite 4 or 6 calipers on a dedicated race car, your brake pads need to match the engineering precision of your calipers—and these PolyMatrix H compounds do exactly that. The H-compound formula delivers progressive friction...WIL15H-8114K- SKU:
- WIL15H-8114K
- Availability:
- Ships Same Business Day
- Weight:
- 4.55 LBS
- MFG Part #:
- 15H-8114K
$263.28Qty in Cart: 0Quantity:Price:$263.28Subtotal: -
Wilwood PolyMatrix B Compound Brake Pads Medium Friction High Temperature Grand National III Caliper 15B-3993K
WILWOOD
$266.78If you're running a Grand National III caliper setup and need predictable braking performance across varying track temperatures, the Wilwood PolyMatrix B pads deliver medium-high friction with exceptional cold bite—meaning you get consistent stopping...WIL15B-3993K- SKU:
- WIL15B-3993K
- Availability:
- Ships Same Business Day
- Weight:
- 6.06 LBS
- MFG Part #:
- 15B-3993K
$266.78 -
Wilwood BP-10 Brake Pads 6812 for Dynalite and Dynapro Single Calipers WIL150-9764K
WILWOOD
$59.26If you're running Wilwood Dynalite or Dynapro single calipers, these BP-10 pads deliver the consistency and stopping power your build demands without the fade that comes with inferior compounds. The BP-10 formulation is engineered for predictable...WIL150-9764K- SKU:
- WIL150-9764K
- Availability:
- Ships Same Business Day
- Weight:
- 1.10 LBS
- MFG Part #:
- 150-9764K
$59.26 -
Wilwood BP-10 Brake Pad Set 6617 for Aero4 Aero6 W4A W6A Calipers 150-9488K
WILWOOD
$129.56Consistent braking performance is non-negotiable when you're pushing your vehicle to the limit on track or at the strip. The Wilwood BP-10 brake pad set delivers medium-friction engagement that's predictable and repeatable, giving you the confidence to...WIL150-9488K- SKU:
- WIL150-9488K
- Availability:
- Ships Same Business Day
- Weight:
- 5.84 LBS
- MFG Part #:
- 150-9488K
$129.56 -
Wilwood BP-10 Brake Pads Medium Friction for Dynapro Calipers 150-9136K
WILWOOD
$62.74Consistent braking performance across street and track demands a pad compound engineered for reliability—the Wilwood BP-10 delivers exactly that with a medium friction formula that won't fade when you need it most. Whether you're conditioning a fresh...WIL150-9136K- SKU:
- WIL150-9136K
- Availability:
- Ships Same Business Day
- Weight:
- 2.31 LBS
- MFG Part #:
- 150-9136K
$62.74 -
Wilwood BP-10 Brake Pads Medium Friction Narrow Dynalite Dynapro Calipers 150-8946K
WILWOOD
$67.76If you're running Wilwood's narrow Dynalite or Dynapro calipers, these BP-10 pads deliver the friction consistency and thermal stability you need for everything from street cruising to drag strip launches. The BP-10 compound balances responsive braking...WIL150-8946K- SKU:
- WIL150-8946K
- Availability:
- Ships Same Business Day
- Weight:
- 2.74 LBS
- MFG Part #:
- 150-8946K
$67.76Qty in Cart: 0Quantity:Price:$67.76Subtotal: -
Wilwood BP-10 Brake Pads Medium Friction for GM D154 Metric Calipers 150-8936K
WILWOOD
$79.75If you're running GM D154 metric calipers on a street rod, muscle car, or track-focused build, you need brake pads engineered for consistent performance across a variety of conditions. The Wilwood BP-10 delivers medium friction compounds that provide...WIL150-8936K- SKU:
- WIL150-8936K
- Availability:
- Ships Same Business Day
- Weight:
- 3.38 LBS
- MFG Part #:
- 150-8936K
$79.75Qty in Cart: 0Quantity:Price:$79.75Subtotal: -
Wilwood BP-10 Brake Pads Medium Friction for Dynalite Calipers 150-8850K
WILWOOD
$62.64If you're running Wilwood Dynalite calipers on a street car, autocross machine, or drag racer, you need brake pads engineered for consistent, repeatable stopping power—not guesswork. The BP-10 medium friction compound delivers smooth engagement and low...WIL150-8850K- SKU:
- WIL150-8850K
- Availability:
- Ships Same Business Day
- Weight:
- 2.38 LBS
- MFG Part #:
- 150-8850K
$62.64 -
Wilwood 2.38" GM Round O-Ring Kit 4 Pack 130-4956
WILWOOD
$18.32Brake caliper performance depends on seal integrity—worn or degraded O-rings compromise piston travel and invite fluid leakage that degrades braking response. The Wilwood 2.38" Round O-Ring Kit supplies the elastomer seals you need to restore your...WIL130-4956- SKU:
- WIL130-4956
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- MFG Part #:
- 130-4956
$18.32 -
Wilwood 2.75-inch GM Round O-Ring Kit 4-pack 130-4955
WILWOOD
$18.32Brake caliper seals wear down with heat cycles and fluid exposure—when they do, your braking system loses pressure and performance. This Wilwood O-Ring Kit gives you everything needed to restore your GM 2.75-inch calipers to factory specifications...WIL130-4955- SKU:
- WIL130-4955
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- MFG Part #:
- 130-4955
$18.32 -
Wilwood 1.62in Square O-Ring Kit 4 Pack 130-4346
WILWOOD
$11.35Brake caliper seals degrade over time due to heat cycling and fluid exposure, leading to fluid leaks and reduced braking performance. The Wilwood 1.62in Square O-Ring Kit provides OEM-quality replacement seals engineered specifically for Wilwood 1...WIL130-4346- SKU:
- WIL130-4346
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- MFG Part #:
- 130-4346
$11.35 -
Wilwood Square O-Ring Kit 1.38" 4-Pack 130-2658
WILWOOD
$11.35Brake system reliability depends on maintaining proper piston seals, and worn or degraded O-rings compromise both stopping power and safety. This Wilwood Square O-Ring Kit restores the critical seal on 1.38-inch pistons, preventing fluid leakage and...WIL130-2658- SKU:
- WIL130-2658
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- MFG Part #:
- 130-2658
$11.35 -
Wilwood 1.75" Square O-Ring Kit 4-Pack 130-2655
WILWOOD
$11.35Wilwood brake calipers demand precision sealing to maintain consistent hydraulic pressure and prevent fluid loss during hard braking. Over time, O-rings degrade from heat cycling and fluid exposure, compromising your braking response when you need it...WIL130-2655- SKU:
- WIL130-2655
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MFG Part #:
- 130-2655
$11.35 -
Wilwood Square O-Ring Kit 1.12 130-2579
WILWOOD
$13.90Brake caliper seals wear with use, and worn O-rings lead to fluid leakage, inconsistent pedal feel, and reduced braking reliability. The Wilwood Square O-Ring Kit 130-2579 provides OEM-quality replacement seals engineered specifically for Wilwood 1...WIL130-2579- SKU:
- WIL130-2579
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- MFG Part #:
- 130-2579
$13.90 -
Wilwood Square O-Ring Kit 1.25" Piston 4-Pack 130-2479
WILWOOD
$13.90Wilwood brake calipers demand precision sealing to maintain consistent stopping power and prevent fluid weeping that compromises safety. This square O-ring kit provides factory-spec replacement seals for 1.25-inch pistons, keeping your calipers...WIL130-2479- SKU:
- WIL130-2479
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- MFG Part #:
- 130-2479
$13.90
