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British Customs Air Injection Removal Kit Triumph Bonneville / SE / T100 / Thruxton / Scrambler / America / Speedmaster
Designed as an emissions control modiﬁcation, the Triumph air injection system pumps air into the engine to force more fuel to burn inside the cylinder. While that may sound commendable, it comes at a cost. The downside of the system is that it creates a lean fueling condition that spikes exhaust temperature -- that encourages your header pipes to turn blue and makes low-speed throttle adjustments ﬁnicky at best.
This upgrade has all the components needed to replace the air injection system for a ﬁnished look and a cooler running engine. The British Customs Air Injection block-off bolts are machined from aluminum in a low proﬁle design and coated black to match the head perfectly or left raw: either way they virtually disappear.
- Reduction in Exhaust temperature
- Discourage blue pipes
- Reduces lean conditions
- Low profile air injection plugs
- Copper crush gaskets
- Rubber nipples
- Air box plug (for stock air box)
|Product Style||RevZilla Item #||MFR. Product #||Availability|
|Product Style Black Oxide||RevZilla Item #1019404||MFR. Product #BC1002-006B||AvailabilityAvailable: Requires 3-5 business days of lead time prior to shipment|
|Product Style Raw||RevZilla Item #1019405||MFR. Product #BC1002-006R||AvailabilityOut of Stock|
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Reviews & Questions
I had two issues I wasn't prepared for, however. The first is that the threads are EXTREMELY tight going into the engine case. DON'T attempt to screw it in without some sort of grease/anti-seize compound.
Second: without changing my idle speed occasionally the bike would stall at reds. You need to adjust the idle up by 100-300rpm to keep this from happening. Just kind of annoying to have my bike needing to idle higher, not a huge deal.
Also, not going to count this one against it but you really need a 13mm step wrench. Trying to get the silver tube/bolts off without it is hell any other way.
Last thing, you can get all these parts from a hardware store if you know what you're looking for, for about $5.
1 year ago
1 year ago
This kit removes all those issues, though with a slightly greater cost to the environment. I, personally, miss the popping of the exhaust, but reducing temperatures and making for a smoother low speed ride is worth taking away some ear candy.
1 year ago
Bike: 2014 Triumph Thruxton
Super easy. Don't be afraid of having to remove the tank. It's a pretty easy task on these bikes and you don't have to remove it completely. You can leave the fuel line attached and set the tank sideways over the battery area. Just be sure to put down a towel and find a way to secure the tank from falling over (I used painters tape and wrapped it up tight). It took 30 mins, but I could probably do it in 10 the next time. Just be sure to get that 13mm box end wrench.
Throttle response is significantly improved. Gone is that jerkiness, it's super silky smooth now.
Popping on deceleration is completely gone.
I did have to adjust the idle up a bit, but that was only because it was idling a few hundred rpms below normal for some reason. Once adjusted, idle is as normal and nothing odd.
Overall the bike just runs smoother now. Feels like this was what they intended it to be.
3 months ago
over 2 years ago