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Dirt Bike Rebuild Kits and Parts

Dirt Bike Rebuild Kits and Parts

Dirt Bike Rebuild Kits and Parts

Dirt Bike Brake Caliper Rebuild Kits & Parts for Honda, Yamaha & KTM at JJ Motorsports

Restore your dirt bike's hydraulic braking system to like-new condition with premium caliper rebuild kits and parts from JJ Motorsports. Our selection includes complete kits with pistons, seals, O-rings, bleed screws, and hardware designed for leak-free operation, smooth piston movement, and reliable performance in motocross, enduro, and trail riding. Compatible with top models like Honda CRF, Yamaha YZ/WR, KTM SX/EXC, and more, these high-quality components eliminate sticky calipers, spongy feel, and fluid loss while extending caliper life in dusty, wet, or high-heat conditions. From Moose Racing's OEM-spec front and rear kits to individual seals and pistons, get everything needed for a full caliper refresh without replacing the entire unit—perfect for maintenance, race prep, or off-season rebuilds.

Shop trusted brands like Moose Racing for race-proven quality. Explore related categories such as dirt bike brake lines for hydraulic upgrades or dirt bike braking for pads and rotors.

Top Brake Caliper Rebuild Kits

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
  • MOTO-MASTER Brake Pad Pin 213078-PU

    MOTO-MASTER Brake Pad Pin 213078-PU

    MOTO-MASTER

    $9.95
    Brake pad pins are critical wear items that directly affect braking system function and safety. A worn or damaged pin compromises pad retention and can lead to uneven braking performance or pad dropout. The MOTO-MASTER 213078-PU is an OEM-equivalent...
    17020734
    SKU:
    17020734
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    $9.95
    Qty in Cart: 0
    Quantity:
    Price:
    $9.95
    Subtotal:
  • On Sale
    MOTO-MASTER Caliper Adapter 211001-PU

    MOTO-MASTER Caliper Adapter 211001-PU

    MOTO-MASTER

    MSRP: $109.95
    Now: $70.00
    Was: $109.95
    When upgrading to larger brake rotors, your stock caliper won't sit in the correct position—leading to poor braking performance and potential safety issues. The MOTO-MASTER Caliper Adapter 211001-PU solves this with precision-engineered positioning,...
    17040572
    SKU:
    17040572
    Availability:
    Ships Same Business Day
    Weight:
    0.50 LBS
    MSRP: $109.95
    Now: $70.00
    Was: $109.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $109.95
    Now: $70.00
    Was: $109.95
    Subtotal:
  • MOTO-MASTER Caliper Adapter 211002-PU

    MOTO-MASTER Caliper Adapter 211002-PU

    MOTO-MASTER

    $109.95
    Upgrading to oversized disc brakes requires proper caliper positioning—this adapter ensures your larger rotors mate correctly with your existing brake system for maximum stopping power. CNC-machined from billet aluminum, it delivers the precision fit and...
    17040573
    SKU:
    17040573
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    $109.95
    Qty in Cart: 0
    Quantity:
    Price:
    $109.95
    Subtotal:
  • MOTO-MASTER Caliper Adapter 211004-PU

    MOTO-MASTER Caliper Adapter 211004-PU

    MOTO-MASTER

    $109.95
    When upgrading to oversized brake rotors, your stock calipers won't sit in the correct position—resulting in poor pad contact and compromised stopping power. The MOTO-MASTER Caliper Adapter 211004-PU solves this with precision-engineered repositioning,...
    17040574
    SKU:
    17040574
    Availability:
    Ships Same Business Day
    Weight:
    0.24 LBS
    $109.95
    Qty in Cart: 0
    Quantity:
    Price:
    $109.95
    Subtotal:
  • MOTO-MASTER Caliper Adapter 211037-PU

    MOTO-MASTER Caliper Adapter 211037-PU

    MOTO-MASTER

    $109.95
    Upgrading to oversized brake rotors is a common mod for serious track-focused builds, but your stock calipers won't align with larger discs without proper relocation. The MOTO-MASTER Caliper Adapter 211037-PU solves this with precision-engineered...
    17040575
    SKU:
    17040575
    Availability:
    Ships Same Business Day
    Weight:
    0.24 LBS
    $109.95
    Qty in Cart: 0
    Quantity:
    Price:
    $109.95
    Subtotal:
  • MOTO-MASTER Caliper Adapter 211040-PU

    MOTO-MASTER Caliper Adapter 211040-PU

    MOTO-MASTER

    $95.95
    Upgrading to larger brake rotors is one of the most effective ways to improve stopping power and heat dissipation, but it requires precise caliper positioning to work correctly. The MOTO-MASTER Caliper Adapter 211040-PU solves this engineering challenge...
    17040576
    SKU:
    17040576
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    $95.95
    Qty in Cart: 0
    Quantity:
    Price:
    $95.95
    Subtotal:
  • MOTO-MASTER Caliper Adapter 211045-PU

    MOTO-MASTER Caliper Adapter 211045-PU

    MOTO-MASTER

    $117.95
    When upgrading to oversized brake rotors, your stock calipers won't sit in the correct position without proper relocation. The MOTO-MASTER Caliper Adapter 211045-PU delivers precision positioning, ensuring your brakes function at peak efficiency and your...
    17040577
    SKU:
    17040577
    Availability:
    Ships Same Business Day
    Weight:
    0.35 LBS
    $117.95
    Qty in Cart: 0
    Quantity:
    Price:
    $117.95
    Subtotal:
  • MOTO-MASTER Caliper Adapter 211047-PU

    MOTO-MASTER Caliper Adapter 211047-PU

    MOTO-MASTER

    $117.95
    When upgrading to oversized disc brakes, your stock caliper mounting won't cut it—this adapter relocates your caliper to the correct position, ensuring proper pad contact and consistent braking performance. The MOTO-MASTER 211047-PU is CNC-machined from...
    17040578
    SKU:
    17040578
    Availability:
    Ships Same Business Day
    Weight:
    0.28 LBS
    $117.95
    Qty in Cart: 0
    Quantity:
    Price:
    $117.95
    Subtotal:
  • On Sale
    MOTO-MASTER Caliper Adapter 211048-PU

    MOTO-MASTER Caliper Adapter 211048-PU

    MOTO-MASTER

    MSRP: $102.95
    Now: $66.00
    Was: $102.95
    If you're running oversized disc brakes or need precise caliper positioning for optimal brake balance, a quality adapter is non-negotiable. The MOTO-MASTER 211048-PU relocates your stock caliper while supporting larger rotors, giving you the braking...
    17040579
    SKU:
    17040579
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    MSRP: $102.95
    Now: $66.00
    Was: $102.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $102.95
    Now: $66.00
    Was: $102.95
    Subtotal:
  • On Sale
    MOTO-MASTER Caliper Adapter 211049-PU

    MOTO-MASTER Caliper Adapter 211049-PU

    MOTO-MASTER

    MSRP: $109.95
    Now: $70.00
    Was: $109.95
    If you're running oversized brake rotors or upgrading your stopping power, caliper positioning becomes critical—and that's where this adapter earns its place on your build. The MOTO-MASTER 211049-PU relocates your stock caliper to work seamlessly with...
    17040580
    SKU:
    17040580
    Availability:
    Ships Same Business Day
    Weight:
    0.01 LBS
    MSRP: $109.95
    Now: $70.00
    Was: $109.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $109.95
    Now: $70.00
    Was: $109.95
    Subtotal:
  • MOTO-MASTER Caliper Adapter 211050-PU

    MOTO-MASTER Caliper Adapter 211050-PU

    MOTO-MASTER

    $109.95
    When you're upgrading to larger brake rotors, your stock calipers won't align properly without the right adapter—and that's where precision matters most. The MOTO-MASTER 211050-PU relocates your calipers to the correct position, ensuring full...
    17040581
    SKU:
    17040581
    Availability:
    Ships Same Business Day
    Weight:
    0.25 LBS
    $109.95
    Qty in Cart: 0
    Quantity:
    Price:
    $109.95
    Subtotal:
  • MOTO-MASTER Caliper Adapter 211053-PU

    MOTO-MASTER Caliper Adapter 211053-PU

    MOTO-MASTER

    $109.95
    Oversized brake rotors demand precise caliper positioning to deliver the stopping power your setup was engineered for. This CNC-machined adapter relocates your caliper to the correct geometry, eliminating pad drag and maximizing contact pressure where it...
    17040582
    SKU:
    17040582
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    $109.95
    Qty in Cart: 0
    Quantity:
    Price:
    $109.95
    Subtotal:
  • MOTO-MASTER Caliper Adapter 211055-PU

    MOTO-MASTER Caliper Adapter 211055-PU

    MOTO-MASTER

    $117.95
    Upgrading to larger brake rotors is one of the most effective ways to improve stopping power and heat dissipation, but your stock calipers won't mount correctly without proper spacing. The MOTO-MASTER Caliper Adapter 211055-PU solves this problem with...
    17040583
    SKU:
    17040583
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    Qty in Cart: 0
    Quantity:
    Price:
    $117.95
    Subtotal:
  • MOTO-MASTER Caliper Adapter Bracket 211058-PU

    MOTO-MASTER Caliper Adapter Bracket 211058-PU

    MOTO-MASTER

    $16.95
    A precision caliper adapter bracket is essential when upgrading your braking system or adapting calipers to a different mounting configuration. The MOTO-MASTER 211058-PU ensures proper caliper alignment and spacing, which directly impacts brake response,...
    17040584
    SKU:
    17040584
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    $16.95
    Qty in Cart: 0
    Quantity:
    Price:
    $16.95
    Subtotal:
  • MOTO-MASTER Caliper Adapter 211067-PU

    MOTO-MASTER Caliper Adapter 211067-PU

    MOTO-MASTER

    $109.95
    Upgrading to oversized brake rotors is one of the most effective ways to improve stopping power and thermal management—but only if your calipers are positioned correctly. The MOTO-MASTER Caliper Adapter 211067-PU ensures proper alignment and clearance...
    17040585
    SKU:
    17040585
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    $109.95
    Qty in Cart: 0
    Quantity:
    Price:
    $109.95
    Subtotal:
  • On Sale
    MOTO-MASTER Caliper Adapter 211073-PU

    MOTO-MASTER Caliper Adapter 211073-PU

    MOTO-MASTER

    MSRP: $109.95
    Now: $70.00
    Was: $109.95
    Upgrading to oversized brake rotors is one of the most effective ways to improve stopping power and heat dissipation, but your stock calipers won't align properly without the right adapter. The MOTO-MASTER Caliper Adapter 211073-PU is a...
    17040586
    SKU:
    17040586
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    MSRP: $109.95
    Now: $70.00
    Was: $109.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $109.95
    Now: $70.00
    Was: $109.95
    Subtotal:
  • MOTO-MASTER Caliper Adapter 211075-PU

    MOTO-MASTER Caliper Adapter 211075-PU

    MOTO-MASTER

    $95.95
    If you're upgrading to larger disc brakes for improved stopping power, proper caliper alignment is non-negotiable—misalignment causes uneven pad wear and compromised braking performance. The MOTO-MASTER 211075-PU Caliper Adapter relocates your stock...
    17040587
    SKU:
    17040587
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    $95.95
    Qty in Cart: 0
    Quantity:
    Price:
    $95.95
    Subtotal:
  • On Sale
    MOTO-MASTER Caliper Adapter 211080-PU

    MOTO-MASTER Caliper Adapter 211080-PU

    MOTO-MASTER

    MSRP: $109.95
    Now: $70.00
    Was: $109.95
    If you're upgrading to oversize brake rotors, you need a caliper adapter that positions your stock calipers correctly for maximum stopping power and consistent pad-to-rotor contact. The MOTO-MASTER 211080-PU relocates your calipers with precision...
    17040588
    SKU:
    17040588
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    MSRP: $109.95
    Now: $70.00
    Was: $109.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $109.95
    Now: $70.00
    Was: $109.95
    Subtotal:
  • On Sale
    MOTO-MASTER Caliper Adapter 211095-PU

    MOTO-MASTER Caliper Adapter 211095-PU

    MOTO-MASTER

    MSRP: $121.95
    Now: $78.00
    Was: $121.95
    Proper brake caliper alignment is critical for consistent pedal feel, even pad wear, and maximum stopping power—especially when running oversized rotors on a built platform. The MOTO-MASTER 211095-PU relocates your caliper to the correct position,...
    17040589
    SKU:
    17040589
    Availability:
    Ships Same Business Day
    Weight:
    0.50 LBS
    MSRP: $121.95
    Now: $78.00
    Was: $121.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $121.95
    Now: $78.00
    Was: $121.95
    Subtotal:
  • MOTO-MASTER Caliper Adapter 211118-PU

    MOTO-MASTER Caliper Adapter 211118-PU

    MOTO-MASTER

    $109.95
    Upgrading to oversized brake rotors gives you superior stopping power and heat dissipation—but your stock calipers won't align with larger discs without the proper adapter. The MOTO-MASTER Caliper Adapter 211118-PU relocates your brake caliper to the...
    17040590
    SKU:
    17040590
    Availability:
    Ships Same Business Day
    Weight:
    0.50 LBS
    $109.95
    Qty in Cart: 0
    Quantity:
    Price:
    $109.95
    Subtotal:
  • Total: items /

Adding your products to cart

Big Power, Nice Sound!

Picked up a Pro Circuit pipe and silencer for my YZ125 it’s a game changer. The power feels way better and the sound is awesome.

Tyler D. - 06/12

Perfect Fit

First time ordering here and dang y’all knocked it outta the park! The wheels fit my Ranger UTV perfect, and I’ll definitely be back for more 5 stars all day!

Sarah L. - 08/24

Fast Shipping!!

Ordered on a Monday, and it was on my doorstep by Wednesday! Super impressed with how fast the shipping was.

Jason P. - 09/13

Helps keep cool, works great!

Bought the dual pass Allstar radiator for my build, and it’s been solid. Keeps the engine running cool even on the hottest days no complaints here!

Jake M. - 05/21

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