behars Loading... Please wait...
Can not use our racing mufflers
on public roads in Japan


Smog Block Off Plate Benefits

Posted by Shane McCoy on

Graves Motorsports Smog Block Off Plates are designed to seal off the ports on the valve cover used by the air injection system (a.k.a smog pumps or AIS). These products are intended for closed course competition use only. Use of this product for any other purpose is strictly prohibited.

What is the AIS or Smog System? The air induction system (AIS) burns unburned exhaust gases by injecting fresh air (secondary air) into the exhaust port, reducing the emission of hydrocarbons.

Once these are capped off the air injection system can be safely removed. These Smog Block Off Plates are made from CNC'ed billet aluminum. Unlike cheaper clones Graves machines recesses into the caps so the OEM reed can remain in the bike and cap. There are three reasons why you want to remove the air injection system from your bike:

  • 1. If you are using your motorcycle on a closed course (racing, track days, etc.) you will want to remove all unnecessary equipment from your bike for reduced weight and ease of maintenance.
  • 2. To get an accurate Air:Fuel (A/F) ratio when dynoing the bike. The air injection system pumps fresh air directly into the exhaust stream in order to burn off any unused fuel. Unfortunately by doing this the A/F ratio is thrown off by the extra "fresh air" in the exhaust stream. By removing the air injection system you can achieve an accurate A/F ratio.
  • 3. This addition will typically remove the majority of popping on deceleration that can be experienced with un-burnt gasses within the emission charcoal chamber. Note: Proper tuning may be needed and this is general feedback.
  • 4. Greatly reduces popping on deceleration
  • 5. Reduces weight from the removal of the system

Want to turn your Kawasaki Ninja 400 into a fine-tuned MISSILE?

Want to turn your Kawasaki Ninja 400 into a fine-tuned MISSILE? How about a second faster while adding 9 mph all on a stock bike? What if we told you that 12% gain + cleaned up power curve is only 2 products? The FTEcu Bike Side Flash Kit (FTDL4) and FTEcu Quick Shifter (FT-QSJ5_G) together [...]

Read More »

Black Friday 2019 Specials

Graves Motorsports Black Friday Specials 2019! (RETAIL Customers Only!)-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Read More »

MotoAmerica Round 9 - New Jersey

Misc. Press Release from the MotoAmerica 2018 New Jersey Round--------------------------------------------------Beaubier Victorious as 2018 MotoAmerica Superbike Champion After Rain-Soaked Race 2 WinYamaha bLU cRU Riders Sweep the Supersport and Junior Cup Podiums at New Jersey Motorsports ParkMillville, N.J. – September 9, 2018 – Monster Energy/Yamalube/Yamaha Factory Racing’s Cameron Beaubier became a three-time MotoAmerica Superbike Champion on Sunday after wrapping up the [...]

Read More »

MotoAmerica Round 8 - Pittsburgh

Misc Press from Round 8 PittsburghBeaubier Claims Close Second-Place Finish in Superbike Race 2 at Pittsburgh International Race ComplexJD Beach Leads Yamaha bLU cRU Podium Sweep in the Supersport ClassPittsburgh, Pa. – August 27, 2018 – Superbike points leader Cameron Beaubier continued his pursuit of a third career title at the MotoAmerica Championship of Pittsburgh, earning valuable points with a hard-fought second-place finish [...]

Read More »

MotoAmerica Round 7 - Sonoma

Misc Press Release from 2018 MotoAmerica Round 7 Sonoma---------------------------Beaubier and Beach Dominate with Double Victories at Sonoma RacewayVentura Scores Sunday Junior Cup Win for Graves/Yamaha R3 Support Program Sonoma, Calif. – August 13, 2018 – Monster Energy/Yamalube/Yamaha Factory Racing’s Cameron Beaubier wrapped up a flawless weekend at Sonoma Raceway on Sunday with another dominant performance in Superbike Race [...]

Read More »

Free Bike Side Flash Kit with Purchase of a FULL Exhaust (Limited Models)

Now through 8-17-18 purchase one of the full exhaust systems listed below at retail or dealer pricing (special pricing does not apply) and receive a free FTEcu bike side kit while supplies last.Honda CBR1000rr 2017 + EXH-17CB1-FT + skusKawasaki ZX10r 2016 + EXK-16ZX1-FT + skus Suzuki GSXR1000rr 2017 + EXS-17G1-FT + skusYamaha R1 2015 + EXY-17R1-FT [...]

Read More »

MotoAmerica Round 6 - Utah

Weekend Press from MotoAmerica Round 6 - 2018 Utah Motorsports ------------------------------Beaubier and Gerloff Finish 1-2 in Sunday’s Superbike Race 2Beach Completes a 1-1 Supersport Sweep at Utah Motorsports CampusTooele, Utah – July 23, 2018 – Monster Energy/Yamalube/Yamaha Factory Racing teammates Cameron Beaubier and Garrett Gerloff claimed the top two positions in Sunday’s Superbike Race 2 for a successful close to Round [...]

Read More »

MotoAmerica Round 5 - Laguna Seca

Misc Press from Round 5 Laguna Seca 2018----------------------Double Superbike Victories for Beaubier at Laguna SecaBeach Claims Win in Sunday’s Supersport Action at MotoAmerica Round 5Monterey, Calif. – June 25, 2018 – With a 1-1 MotoAmerica Superbike sweep for the weekend, Cameron Beaubier and the Monster Energy/Yamalube/Yamaha Factory Racing Team extended their winning streak to four-in-a-row after an impeccable Round 5 of the MotoAmerica [...]

Read More »

MotoAmerica 2018 Round 3 - VIR

Weekend Press Releases from MotoAmerica Round 3 - VIR----------------------------------------------------------Monster Energy/Yamalube/Yamaha Factory Racing’s Beaubier Claims Second Superbike Podium in VirginiaBeach Goes Two-For-Two in Supersport Action at VIRAlton, Virginia – May 7, 2018 – Following a hard-fought second-place finish in Saturday’s Superbike Race 1 at VIRginia International Raceway, Monster Energy/Yamalube/Yamaha Factory Racing’s Cameron Beaubier duplicated his efforts in Race 2 on Sunday, adding [...]

Read More »

Back to Top