Vstar AIS Blockoff Caps

V-Star AIS Blockoff Caps – The Easy Way to Kill Decel Pop

Say goodbye to obnoxious decel popping without fighting seized factory fittings. These V-Star AIS blockoff caps slide over your stock AIS fittings and lock down with set screws, so you can delete the smog system without wrenching those rusted 90-degree elbows out of the cylinders. It’s the easy, 10-minute AIS delete that actually works—and it’s built for real riders, not eBay roulette.

Machined for Yamaha V-Star 650 and 1100 owners who are running aftermarket pipes, bobber builds, or just want a cleaner, simpler motor, these caps turn a knuckle-busting job into a simple afternoon upgrade. Pair them with fresh exhaust and basic carb tuning, and your V-Star will finally sound mean without the shotgun crack on every downshift.

Why These Caps Beat Plates:

1. No fitting removal required – caps slip over stock AIS fittings; no more wrestling seized 90-degree fittings.
2. Stops decel pop when used with proper exhaust and carb setup.
3. Set-screw design bites down and stays put, even on long, hot rides.
4. Includes thread locker so you’re not hunting for extras during install.
5. Designed as the “easy AIS delete” alternative to old-school blockoff plates.

Key Features:

• AIS blockoff caps for Yamaha V-Star 650 and 1100.
• CNC-machined construction for precise fit and long life.
• Designed to work over OEM AIS fittings—no need to unthread them.
• Compatible with high-temp RTV at install for a permanent, leak-free seal.
• Built in the USA with a focus on function, not throwaway rubber.

Fitment:

• Yamaha V-Star 650 (all years using the factory AIS/smog system).
• Yamaha V-Star 1100 (all AIS-equipped models).

Ideal for bikes with:

• Aftermarket exhaust (shotgun, shorty, 2-into-2, drag pipes).
• Bobber and chopper builds where clean cylinder heads matter.

What This Fixes:

• Popping on deceleration after installing aftermarket pipes.
• Backfires and crackles caused by fresh air being injected into hot exhaust.
• The need for hacky “marbling” tricks and temporary AIS band-aids.

FAQ:

1. Q: How do I stop my V-Star 650 from popping on decel? A. Deleting the AIS system with proper blockoff caps and then dialing in your carb jetting is the cleanest way to drastically reduce or eliminate decel pop.
2. Q: Do I have to remove the stock AIS fittings? A. Not with these. These are caps, not plates—they’re designed to fit over the existing fittings so you don’t have to fight rusted threads in the heads.
3. Q: Will this work on a V-Star 1100 with aftermarket pipes? A. Yes. If your 1100 still has the AIS system hooked up, these caps let you delete it cleanly so your new pipes don’t bark and crack on every roll-off.
4. Q: What’s the difference between caps and plates? A. Plates require you to unbolt and remove the factory AIS fittings, which is often a nightmare. Caps cover and seal the fittings where they sit, for the same result with a fraction of the effort.
5. Q: Can I leave the stock AIS fittings installed with these caps? A. Yes. That’s the entire point of this design—you leave the fittings alone and simply cap them off securely.
6. Q: Is this better than “marbling”? A. Yes. Marbling is a temporary trick; these caps are a permanent, mechanical fix that actually blocks the system instead of just trying to cheat airflow.

These V-Star AIS blockoff caps are made for riders who’d rather be riding than fighting frozen hardware—built in the USA by people who live in the same garage culture you do.