Why Shop Spookytooth? Click Here

No Sales Tax! excludes CA
Product Videos
  • Play

    Boost Bottle and Expansion Chamber Part Review

    A quick look at why these two part go great together!

  • Play

    How an expansion chamber works and is installed.

    Learn about the science of how an expansion chamber works.

Expansion Chamber with Muffler Item# SD-EXPCHAMB-M

OUR PRICE: $49.95
List Price: $89.97

* Required Fields

Availability: In stock

This Expansion Chamber with Muffler will enhance your power output by expanding the volumetric efficiency 2-stroke bike engine. In addition to adding a boost in the top end speed, this muffler improves the use of any left over energy from the burnt exhaust exiting the cylinder. This helps aid the filling of the cylinder for the next cycle, and all is done with a muffler to stifle the sound of the exhaust.

Gasoline operated products are NOT compliant with Environmental Protection Agency ( E.P.A. ) or California Air Resources Board (C.A.R.B) for the use on/off Public roads. Upon purchase, the buyer agrees to use products for racing (closed-course competition) only and NOT for on/off public roads.

Best Price Guarantee

BikeBerry.com is committed to providing our customers with the best price available online! At BikeBerry.com we work hard to offer the most competitive pricing available, but if you find a lower price online, let us know and we'll match it! In fact, if you find a lower price within 30 days of your original purchase date, we'll refund you the difference.

Complete the Best Price Guarantee form below to request a quote or price difference refund.

Best Price Guarantee Terms and Conditions:

Item must be the identical model from an authorized U.S. dealer. Specifically, the product must have the same U.S. manufacturer's warranty, model number, and contain the same components. BikeBerry.com will price match only in-stock products.

BikeBerry.com reserves the right to verify another online company's product availability and price before issuing a price match.

BikeBerry.com does not match auction websites or refurbished products.

The Best Price Guarantee does not apply to obvious pricing errors or clearance/close-out items.

Best Price Guarantee applies to the total purchase price of the item. Total purchase price includes shipping, taxes, or other discounts.

  • * Required Fields


Customer Reviews

Glad I bought one Review by Adam
I popped this on a stock 66cc, and got instant results. Better low end and a cleaner high end. Glad I got this one :) (Posted on 11/23/2014)

Write Your Own Review

You're reviewing: Expansion Chamber with Muffler

How do you rate this product? *

 1 star2 stars3 stars4 stars5 stars

Customers Q & A

Ask a Question
Don't see the answer you need?Ask a Product Expert! The answer will be emailed to you and then posted here.

1 Item(s)

per page
Q: How does the sound compare to a stock muffler? Same? More? Less?

Posted On: 1/26/2019 By: Axe

A: Our Expansion Chamber with Muffler is going to be louder than the stock exhaust.

Have a question? Call 888-621-0455
Authorize.Net Merchant - Click to Verify  SSL Secured