These adapters fit neatly into the stock plastic end cap by replacing an existing rubber grommet (see installation instructions for more info). The adapter provides just enough exposed tube length to mount a TRS-1 spark arrestor external to the plastic end cap. The inside diameter of the adapter exposed to exhaust flow matches that of the existing tube so no additional flow restriction is created. Use of this adapter allows the spark arrestor to be mounted outside of the end cap for easy removal & cleaning. Note TRS-1 spark arrestor must be purchased separately or in the BT-4 adapter & TRS-1 spark arrestor KIT. Note these are for TRIALS BIKES ONLY, will not fit enduro bikes.
Note: Anodized color will fade over time due to heat, UV light, & chemical exposure.
Installation instructions Rev.3
Applications: Sherco/Scorpa two stroke models TRIALS BIKES ONLY,125-300cc engine sizes for years 2014-2022.
Part # ST-4 Technical Data:
PATENT PENDING
Body-anodized 6061-T6 aluminum
Sealing/Fitting- (2X) size 025 viton O rings
Weight- 39 grams/1.4 oz