Boomba Racing 420g Weighted Shift Knob - Black | 2016-2021 Honda Civic (037000100000)

Boomba Racing Inc.
Looking for the lowest price?

Give us a call to get the best prices and parts for your build. Or, just call us with a cool racing story...either way we're here.

Phone Call or Text 651-927-4510

Email -

Fits Your:
Expected Delivery by , when ordered within hrs and mins
 Need Help Getting Started?
Call Or Text Our Experts at 651-927-4510

$85.50 $95.00Instant Savings of 10% ($9.50)

Earn  $1.71 In MAP Rewards!

10th Gen Civic Si 420g Shift Knob by Boomba Racing

These shift knobs feature a precision CNC machined brass core for added weight as well as a black delrin shell for durability, excellent appearance and ‘temperature management’.

420g vs. the 180g of a stock knob. A heavier shift knob puts the weight towards the end of the shift lever. This increased momentum while shifting gives you a greater mechanical advantage, allowing for a much more positive feeling throw when rowing through the gears.

The delrin shell features a cap with an engraved shift pattern. Since these knobs are delrin, it prevents the surface of the shift knob from getting too hot in the summer and too cold in the winter. These shift knobs make a great addition to your Tenth Gen interior!


  • Precision CNC Machined Brass Core for Added Weight
  • Weighs 420g vs the 180g Stock Knob (Over Twice as Heavy)
  • Delrin Shell for Durability and Heat Management
  • Laser-Engraved Shift Pattern on the Cap


**Compatible with OEM & Boomba Racing Short Shift lever, or any shift lever with a thread pitch of 10x1.5**


  • 2016-2021 Honda Civic (All Models)


  • Increased Shifting Momentum
  • Greater Mechanical Advantage
  • More Positive Shift Feel

What's In The Box?

  • 1 - Weighted Shift Knob
  • All Necessary Hardware
  • Instructions/Manuals (if applicable)
  • Warranty Information




Boomba Racing Warranty

Customer Reviews

Based on 4 reviews
Makes shifting smooth like butter

I bought this before I installed my short shifter and it really made each shift so smooth! It is a lot heavier than the stock shift knob and the black really gives it a clean look. Highly recommend!

Cory S.
Love it

Love the weight and the feel of it. It is bigger than oem shift knob but it fits better and feels better in my and it the extra weight feels like it just slides in gear like butter.

Israel Delanuez

Great product love the weight

Anthony Sgroi
Love it

This Boomba shift knob is a very high quality product. It looks and feels great compared to the stock shift knob and was very easy to install.