“Chubby”
2019 – 2020 Honda CRF110
Built using our black hard anodized octagonal aluminum muffler housing and carbon fiber end cap from our full size exhaust systems. The Pit Bike”Chubby” is a short muffler design that features increased volume which adds power and makes an awesome sound. It’s our big bike muffler with all the features including carbon end cap, CNC hanger bracket and four bolt serviceability. Dynoed many different tube and core diameters and made best overall power. Sacrificed .5 hp on top to gain bottom and mid. CJR Performance has a map for the stock ECU that makes more power if you open up the air box. I can tell you what to do if you’re interested.
- – Octagonal-shaped large volume muffler housing means more power and better sound
- – Stepped head pipe diameter maximizes bottom, mid and top power over a single diameter design
- – Carbon fiber end cap
- – Rebuildable with simple hand tools, no grinding rivets.
- – In the event of crash-damage, all exhaust system parts are available individually
- – Optional “Backyard” quiet core available
The Rocket Exhuast
The muffler housing is available in brushed aluminum, black hard anodized aluminum and carbon fiber. The unique muffler mounting system insures a “happy” fit utilizing our adjustable CNC machined hanger bracket and precision mid-pipe to muffler slip-fit.
Head and mid-pipes are constructed from aircraft quality 304 stainless steel. Each model is dyno tuned and track tested to optimize performance and power gains using “stepped” and or “tapered” tube designs.
Features
Carbon fiber end-cap
Standard equipment
Lightweight header/mid
Thin wall 304 stainless steel head and mid-pipe construction
Lightweight muffler
6061 aluminum or optional lightweight carbon fiber muffler housing
AMA and FIM
Race legal versions available
Optional muffler lengths
(12″-17″) and multiple core designs available
USDA Forest Service
Approved spark arrester optional
CNC machined
Hanger bracket and end cap nozzle
General Warranty
We take care of all our customers. If it is broken, we fix it.
Specification
Muffler Length
12″, 14.5″ to 15.5″ (Custom Lengths Available)
Muffler Width
mm (varies per length and core type)
Muffler Tip Diameter
mm (varies per length and core type)
Muffler Weight
lbs (varies per length and core type)
Bracket Material
CNC Machined 6061 Aluminum
Hardware Type
CAD Plated Steel
Header Length
inches (varies per bike)
Header Diameter
mm (varies per bike)
Header Weight
lbs (varies per bike)
Header Material
304 Stainless Steel
Weld Type
TIG Welded
Max Sound Output
dB (std systems meet AMA 94 db, FIM 2 Meter Max avail (not for all bikes) (note larger outlet nozzle and or core dia and shorter muffler housing will add more sound db)
Max Sound Output
94 dB with Stealth Insert
Powerband Change
(every bike is different)
Time to Install
10 minutes
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