Select Your Ride

1
2
3

Manual Transmissions and Components

Manual Transmissions and Components

Manual Transmissions and Components

Circle Track Manual Transmissions & Components at JJ Motorsports

Power your circle track racer with reliable manual transmissions and precision components from JJ Motorsports. Engineered for seamless gear shifts, maximum torque transfer, and endurance in high-RPM racing conditions, these parts suit IMCA, USMTS, and dirt oval series for late models, modifieds, and street stocks, ensuring consistent performance lap after lap.

Shop trusted brands like Winters for durable input shafts, Brinn Transmission for lightweight flywheels and tail housings. Explore related categories such as Circle Track Drivetrain for complete powertrain solutions or Circle Track Engines and Components for matching engine upgrades.

Top Circle Track Manual Transmissions & Components

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
  • Piston Return Spring  BERSG-1078

    Bert Piston Return Spring SG-1078

    BERT TRANSMISSIONS

    $7.99
    A worn or failing piston return spring compromises shift quality and can lead to delayed engagement or transmission creep—problems that compound under racing conditions. The Bert SG-1078 is engineered to restore precise spring tension, ensuring...
    BERSG-1078
    SKU:
    BERSG-1078
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    MFG Part #:
    SG-1078
    $7.99
    Qty in Cart: 0
    Quantity:
    Price:
    $7.99
    Subtotal:
  • Double Row Chain 3/8  BERSG-1076

    Bert Double Row Chain 3/8 SG-1076

    BERT TRANSMISSIONS

    $67.99
    If you're running a Bert Second Gen transmission, a worn or damaged chain will kill your power delivery and leave you stranded on the track or at the strip. The Bert Double Row Chain 3/8 SG-1076 is engineered specifically for your transmission's demands,...
    BERSG-1076
    SKU:
    BERSG-1076
    Availability:
    Ships Same Business Day
    Weight:
    0.64 LBS
    MFG Part #:
    SG-1076
    $67.99
    Qty in Cart: 0
    Quantity:
    Price:
    $67.99
    Subtotal:
  • Needle Bearing 40x45x27  BERSG-1069

    Bert Needle Bearing 40x45x27 SG-1069

    BERT TRANSMISSIONS

    $16.99
    Needle bearing wear is one of the most common failure points in high-performance transmissions, leading to catastrophic gear slippage and loss of power delivery. The Bert SG-1069 is engineered to handle extreme radial loads with precision-caged needle...
    BERSG-1069
    SKU:
    BERSG-1069
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    MFG Part #:
    SG-1069
    $16.99
    Qty in Cart: 0
    Quantity:
    Price:
    $16.99
    Subtotal:
  • Breather  BERSG-1068

    Bert Breather SG-1068

    BERT TRANSMISSIONS

    $6.49
    Transmission breathers prevent pressure buildup and moisture accumulation inside your gearbox, which directly extends transmission life and maintains consistent shift quality under sustained racing conditions. The Bert Breather SG-1068 is engineered for...
    BERSG-1068
    SKU:
    BERSG-1068
    Availability:
    Ships Same Business Day
    Weight:
    0.09 LBS
    MFG Part #:
    SG-1068
    $6.49
    Qty in Cart: 0
    Quantity:
    Price:
    $6.49
    Subtotal:
  • Servo Bleeder  BERSG-1065

    Bert Servo Bleeder SG-1065

    BERT TRANSMISSIONS

    $9.99
    Proper servo bleeding is critical for maintaining consistent shift quality and reliability in Bert second-generation transmissions. Air in the servo circuit compromises hydraulic response and can lead to erratic shifts or transmission damage during...
    BERSG-1065
    SKU:
    BERSG-1065
    Availability:
    Ships Same Business Day
    Weight:
    0.25 LBS
    MFG Part #:
    SG-1065
    $9.99
    Qty in Cart: 0
    Quantity:
    Price:
    $9.99
    Subtotal:
  • Detent Ball 5/16in  BERSG-1060

    Bert Detent Ball 5/16in SG-1060

    BERT TRANSMISSIONS

    $1.99
    Detent balls are critical precision components in Bert manual transmissions, ensuring positive gear engagement and preventing unwanted gear slippage during hard acceleration or gear changes. A worn or damaged detent ball compromises shift quality and can...
    BERSG-1060
    SKU:
    BERSG-1060
    Availability:
    Ships Same Business Day
    Weight:
    0.01 LBS
    MFG Part #:
    SG-1060
    $1.99
    Qty in Cart: 0
    Quantity:
    Price:
    $1.99
    Subtotal:
  • Cage Needle Bearing  BERSG-1058

    Bert Cage Needle Bearing SG-1058

    BERT TRANSMISSIONS

    $19.99
    Transmission bearing wear is one of the leading causes of premature gearbox failure in high-performance racing applications. The Bert Cage Needle Bearing SG-1058 delivers the radial load capacity and precision fit your Bert late-model transmission...
    BERSG-1058
    SKU:
    BERSG-1058
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    MFG Part #:
    SG-1058
    $19.99
    Qty in Cart: 0
    Quantity:
    Price:
    $19.99
    Subtotal:
  • Input Shaft Bearing  BERSG-1053

    Bert Input Shaft Bearing SG-1053

    BERT TRANSMISSIONS

    $43.99
    The input shaft bearing is the critical load-bearing component that supports your transmission's input shaft under extreme rotational stress. A worn or damaged bearing leads to play in the shaft, increased friction, and catastrophic transmission...
    BERSG-1053
    SKU:
    BERSG-1053
    Availability:
    Ships Same Business Day
    Weight:
    0.60 LBS
    MFG Part #:
    SG-1053
    $43.99
    Qty in Cart: 0
    Quantity:
    Price:
    $43.99
    Subtotal:
  • Bearing Carrier Thrust Support Bearing BERSG-1032-K

    Bert Bearing Carrier Thrust Support Bearing SG-1032-K

    BERT TRANSMISSIONS

    $74.99
    If you're running a Bert second-generation transmission in a high-performance application, the thrust support bearing is a critical component that directly impacts power delivery and transmission longevity. A worn or failing carrier support bearing can...
    BERSG-1032-K
    SKU:
    BERSG-1032-K
    Availability:
    Ships Same Business Day
    Weight:
    0.08 LBS
    MFG Part #:
    SG-1032-K
    $74.99
    Qty in Cart: 0
    Quantity:
    Price:
    $74.99
    Subtotal:
  • Reverse Bearing  BERSG-1031-K

    Bert Reverse Bearing SG-1031-K

    BERT TRANSMISSIONS

    $66.99
    Reverse bearing wear is one of the most overlooked failure points in high-performance transmissions, yet it's critical for reliable launches and consistent shifting under load. The Bert SG-1031-K is engineered specifically for Bert second-generation...
    BERSG-1031-K
    SKU:
    BERSG-1031-K
    Availability:
    Ships Same Business Day
    Weight:
    0.80 LBS
    MFG Part #:
    SG-1031-K
    $66.99
    Qty in Cart: 0
    Quantity:
    Price:
    $66.99
    Subtotal:
  • Band 2nd Generation  BERSG-1030-K

    Bert Band 2nd Generation SG-1030-K

    BERT TRANSMISSIONS

    $239.99
    Transmission flex bands are critical wear items in high-performance Bert transmissions—when yours begins to slip or chatter, power transfer suffers and shift quality degrades. The Bert Band 2nd Generation SG-1030-K delivers factory-spec friction material...
    BERSG-1030-K
    SKU:
    BERSG-1030-K
    Availability:
    Ships Same Business Day
    Weight:
    0.81 LBS
    MFG Part #:
    SG-1030-K
    $239.99
    Qty in Cart: 0
    Quantity:
    Price:
    $239.99
    Subtotal:
  • Reverse Gear  BERSG-1029

    Bert Reverse Gear SG-1029

    BERT TRANSMISSIONS

    $154.99
    A worn or damaged reverse gear compromises both safety and transmission reliability, especially in high-performance or racing applications where gear engagement is critical. The Bert Reverse Gear SG-1029 is engineered for durability and precise...
    BERSG-1029
    SKU:
    BERSG-1029
    Availability:
    Ships Same Business Day
    Weight:
    0.64 LBS
    MFG Part #:
    SG-1029
    $154.99
    Qty in Cart: 0
    Quantity:
    Price:
    $154.99
    Subtotal:
  • Guide Screw Shifting Rod  BERSG-1022

    Bert Guide Screw Shifting Rod SG-1022

    BERT TRANSMISSIONS

    $11.99
    Precision shifter operation depends on the quality of your guide screw assembly—a poorly maintained or worn rod directly impacts shift accuracy and consistency under race conditions. The Bert Guide Screw Shifting Rod SG-1022 is engineered to maintain...
    BERSG-1022
    SKU:
    BERSG-1022
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    MFG Part #:
    SG-1022
    $11.99
    Qty in Cart: 0
    Quantity:
    Price:
    $11.99
    Subtotal:
  • Thrust Washer  BERSG-1021

    Bert Thrust Washer SG-1021

    BERT TRANSMISSIONS

    $0.99
    Thrust washers are critical wear components in any high-performance transmission—they manage axial load and prevent costly gear damage during aggressive launches and sustained power delivery. If you're running a Bert second-generation transmission, a...
    BERSG-1021
    SKU:
    BERSG-1021
    Availability:
    Ships Same Business Day
    Weight:
    0.02 LBS
    MFG Part #:
    SG-1021
    $0.99
    Qty in Cart: 0
    Quantity:
    Price:
    $0.99
    Subtotal:
  • Servo Piston  BERSG-1018

    Bert Servo Piston SG-1018

    BERT TRANSMISSIONS

    $17.99
    Internal transmission components wear down under racing conditions, and a compromised servo piston directly impacts shift quality and power delivery. The Bert Servo Piston SG-1018 is engineered for second-generation Bert transmissions to restore precise...
    BERSG-1018
    SKU:
    BERSG-1018
    Availability:
    Ships Same Business Day
    Weight:
    0.20 LBS
    MFG Part #:
    SG-1018
    $17.99
    Qty in Cart: 0
    Quantity:
    Price:
    $17.99
    Subtotal:
  • Selector Fork  BERSG-1017

    Bert Selector Fork SG-1017

    BERT TRANSMISSIONS

    $20.99
    If you're running a Bert Second Generation transmission, you need a selector fork engineered to handle the precision demands of competitive shifting. The Bert Selector Fork SG-1017 is a direct-fit replacement that restores crisp, reliable gear...
    BERSG-1017
    SKU:
    BERSG-1017
    Availability:
    Ships Same Business Day
    Weight:
    0.08 LBS
    MFG Part #:
    SG-1017
    Qty in Cart: 0
    Quantity:
    Price:
    $20.99
    Subtotal:
  • Thrust Ring Sun Gear  BERSG-1016

    Bert Thrust Ring Sun Gear SG-1016

    BERT TRANSMISSIONS

    $6.99
    The Bert Thrust Ring Sun Gear SG-1016 is a critical component for maintaining proper gear engagement and load distribution in your Bert transmission. This precision-engineered part prevents excessive endplay and ensures consistent power delivery under...
    BERSG-1016
    SKU:
    BERSG-1016
    Availability:
    Ships Same Business Day
    Weight:
    0.04 LBS
    MFG Part #:
    SG-1016
    $6.99
    Qty in Cart: 0
    Quantity:
    Price:
    $6.99
    Subtotal:
  • Sun Gear  BERSG-1012

    Bert Sun Gear SG-1012

    BERT TRANSMISSIONS

    $169.99
    The Bert Sun Gear SG-1012 is a precision-engineered component designed to deliver reliable power transfer and consistent gear engagement in high-performance Bert transmissions. Whether you're running a dedicated drag setup or a street/strip hybrid, a...
    BERSG-1012
    SKU:
    BERSG-1012
    Availability:
    Ships Same Business Day
    Weight:
    0.84 LBS
    MFG Part #:
    SG-1012
    $169.99
    Qty in Cart: 0
    Quantity:
    Price:
    $169.99
    Subtotal:
  • Carrier Support  BERSG-1011

    Bert Carrier Support SG-1011

    BERT TRANSMISSIONS

    $1.49
    The Bert Carrier Support SG-1011 is an essential component for maintaining proper differential carrier alignment in your Bert Second Gen transmission. This OEM-spec support ensures consistent gear meshing and eliminates unwanted carrier deflection under...
    BERSG-1011
    SKU:
    BERSG-1011
    Availability:
    Ships Same Business Day
    Weight:
    0.09 LBS
    MFG Part #:
    SG-1011
    $1.49
    Qty in Cart: 0
    Quantity:
    Price:
    $1.49
    Subtotal:
  • Carrier Low & Reverse  BERSG-1009

    Bert Carrier Low & Reverse SG-1009

    BERT TRANSMISSIONS

    $339.99
    If you're running a Bert Second Generation transmission in a high-performance application, the integrity of your low and reverse carrier directly impacts reliability under load. A quality OEM replacement or upgrade carrier ensures consistent engagement...
    BERSG-1009
    SKU:
    BERSG-1009
    Availability:
    Ships Same Business Day
    Weight:
    1.75 LBS
    MFG Part #:
    SG-1009
    $339.99
    Qty in Cart: 0
    Quantity:
    Price:
    $339.99
    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

SECURE & SAFE PAYMENT

EASY RETURNS

FAST DELIVERY

AUTHORIZED DEALER