Quick answer
Treat the TRS full exhaust as a weight-and-response upgrade first, then build your track setup around it. The Race Series system removes about 6.5 pounds from the FZ-S 2.0 and adds horsepower, torque and a race-derived sound, so your first session should focus on confirming fitment, rechecking hardware, and adjusting your riding reference points rather than chasing more parts.
Why the weight loss matters more than the headline number
On a 149cc air-cooled machine, 6.5 pounds is a meaningful share of what the bike carries. You will notice it most when changing direction and under braking, where less mass has to be slowed and redirected. That is why the first track day with the TRS should be about recalibrating braking points and turn-in, not about adding more modifications.
The catalog lists horsepower and torque gains but does not publish a dyno curve, so treat any claimed peak figure as a starting point for your own testing rather than a guarantee of where the power arrives.
Where the TRS fits and where it does not
The TRS is a Race Series full system aimed at riders who want Yoshimura construction at a friendly price. It is not a street-legal homologated exhaust, and the catalog does not supply noise or emissions compliance data, so verify your track's sound limits before you commit to a session.
If your local circuit enforces a strict static noise test, measure the system before your first event. The catalog describes a race-derived sound but gives no decibel figure, so only your own meter reading or the organizer's test will tell you whether you pass.
Track setup questions, answered
What should I check before the first session?
Confirm every exhaust flange, clamp and mount is tight to the specification you used during installation, then recheck them after the first heat cycle. A race full system sees more vibration and heat than a stock unit, so a second pass with a torque wrench is cheap insurance. Re-torque after the first heat cycle, not just at installation.
Do I need a fuel controller or ECU change?
The catalog does not state whether the TRS requires fueling changes, so do not assume either way. Ask Yoshimura support or your tuner directly for the FZ-S 2.0 before you ride, and treat any fueling decision as a separate step from the exhaust install. Get fueling guidance in writing before your first track day.
How should I set up my first track session?
Spend the first session re-learning braking points and turn-in with the lighter system, and note where the bike feels different. Change one thing at a time, such as tire pressure or gearing, so you can attribute any improvement to a single change. One variable per session keeps your notes useful.
What about noise limits at my track?
The catalog gives no decibel rating for the TRS, so measure the system yourself or check with the organizer before entering. If you are close to the limit, plan a backup baffle or a different event rather than risking a failed test. Measure before you pay for a track day.
Is this exhaust legal for street use?
The TRS is a Race Series system, and the catalog does not present it as street-legal or emissions-compliant. Check your local regulations before riding on public roads, and keep the stock system if you need to switch back for inspection. Keep the stock exhaust for street or inspection use.
What maintenance does the stainless system need?
Stainless construction resists corrosion, but track use leaves rubber, chain lube and brake dust on the pipes. Clean the system when the bike is cool, and inspect the muffler packing and clamps at the same interval you check your chain. Add an exhaust inspection to your regular track-day checklist.
Product facts
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FZ-S 2.0 16 Race TRS Stainless Full Exhaust, w/ Stainless Muffler: The TRS stainless full exhaust with stainless muffler is built for the 149cc air-cooled Yamaha FZ-S 2.0 and removes about 6.5 pounds from the bike. Less mass means quicker direction changes and easier braking, so plan your first session around new reference points rather than more power.
FZ-S 2.0 16 Race TRS Stainless Full Exhaust, w/ Stainless Muffler