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Basic Information
Product Name GEAR JABA
Price USD 40.62
Shipping (Charge) International Shipping Fee

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Product Details

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GEAR JABA is one of the weak parts of MS Chassis driving part.

To prevent the rear counter gear from rising upwards

It is a jig that helps machining so that it can be firmly fixed to the chassis using a hollow shaft.

Caused by the phenomenon that the rear counter rises upward

1. Damage to fixing hooks of part A
2. Broken pinion gear
3. Counter gear broken
4. Loss of torque

As a tool that covers all of these, it is an essential jig in open classes.

Previously, some players in Japan used a method of drilling holes on both sides of the chassis.

It is a product that eliminates the disadvantages of hole processing method and shaft attachment/detachment.

It is a very popular product that is also flooded with orders from Japan.

※ The 2mm hollow shaft in the picture is for better understanding.
not included in this product
It can be purchased separately from the website.
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The component consists of a drill for drilling holes and a handle.

A separately machined 2mm hollow shaft is used to replace the shaft of the counter gear.
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As shown in the picture above, on both sides of the shaft for counter gear

After drilling a 2mm thick hole to the desired depth,

By inserting a machined hollow shaft, the counter gear is completely fixed.
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- How to use -

Insert the gear java drill into the chassis counter gear position as shown in the picture.

The location to drill the hole in the photo is on the left.

(Depending on the color and type of chassis, you may need to spread them slightly apart.)
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Insert the handle, which is a component, in the opposite direction to the blade.
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While pressing the handle in the direction of the arrow in the direction of the blade entry,

Turn the gear Java clockwise to process.
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Drill just enough to let the shaft go in.

If you drill too deep, the shaft may come out.

Work in multiple parts at once.

Please refer to the picture to help.
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Use the blade of the gear java to drill the other side as well.

Turn it in the opposite direction and insert it into the chassis.
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As I push the handle in the same direction

Turn the gear Java clockwise to process.
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Next, insert the hollow shaft sold by Switch On into the chassis.

With the feeling of slightly opening the chassis with your hand

Put it in the diagonal direction while applying force.

After that, you can use the same method when inserting and removing the counter gear.
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Then, shake it with tweezers in the direction the shaft was drilled.

(This is the most important point.)

It is most important to drill just enough to move it left and right.
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As shown in the picture below, there is room to move left and right,

It must be machined to a depth where the shaft will not fall out of the chassis.
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If you shake it but it is stuck and does not move

Repeat the operation below again.
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When shaking the shaft as shown in the picture below

without falling over

clack clack

If you can feel the movement, you're done.
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We accept the following forms of payment:
- Account Transfer
- PayPal(Credit card)
- PayPal


  • Shipping Method : Parcel Service
  • Shipping Area : A Region.
  • Shipping Cost : International Shipping Fee
  • Shipping Time : 7 - 20 days
  • Please take into consideration that some products may take additional time for delivery and processing.
    Important: Your order is shipped once your payment has been cleared. Please contact our customer service center if you would like to request an exchange or return on your order.

    - Customs and Duties

    The recipient will be held responsible for international shipments which may be subject to import duties and taxes. Please be advised that these charges are levied by the destination country and we do not have control over them. In the case that the recipient refuses to receive the parcel, the order will be returned to Korea and will not be re-shipped. Relevant expenses (round-trip shipping, customs, etc.) will be deducted from the refund.

Returns & Exchanges

1. Address for returns and exchanges:
- [04373] Seoul, Republic of Korea 813,48, Cheongpa-ro, Yongsan-gu,

2. Requirements:

Please take into consideration that we only accept qualifying returns but not exchanges. Refunds are issued once the returned products clear our inspection.

1) An item is eligible for cancellation if:
-you posted a Return request within 24 hours of payment and your order is still under “Pending” status (if your order is under “Preparing Shipment” status, please contact our customer service center) or
-the order is delayed for more than 10 days since payment and you have not received any notification regarding the delay; or
-the ordered item is out of stock.

2) We accept return(s) if:

-you receive a product different from your order; or

-you receive a defective product.

**Return Instructions

(1) Post a return request on our Return forum within three days of receipt. You are required to attach the photos of the received product(s) and include the item code, the order number, and the reason for the return.

(2) A customer service representative will be in contact to assist you by email or phone.

(3) Items returned must be in their original condition, which includes tags and any packaging. Also, you need to include a note of your order number, name, and user ID.

*Please be advised that returns are accepted ONLY IF you followed the instructions above and your return request has been approved by our staff. Returns that are shipped to us without any prior consent are not accepted.

*Please note that EVEN the defective/incorrect item(s) must be returned with all of the tags and labels intact. The item(s) must be sent in their original packaging and unworn.

*Please include all contents of the original package and free gifts (if applicable) in your return packaging.

* Shipping fee for any return caused by our fault will be paid by the company. However, if EMS’ cash on delivery is not possible then you can scan the return receipt and either mail it with the item to return or post an image of it on the forum. The shipping fee will be refunded once the returned item has arrived.

The following items are not considered defective:

* Items that are originally manufactured without tags or labels
* Items with creases that may have been made while shipping
* Items with unsatisfactory/incomplete finish due to mass production

4) If there is a missing item from your order:

*Contact our customer service center by phone or by forum (if you cannot reach us by phone) within 1 day of delivery.
*Please keep all contents of the original package including packaging material (boxes, plastic bags etc.) with you until you are instructed otherwise.

Please note that we may not be able to process the refund for your missing item if you lose or damage any packaging material.

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