SG Motorsport is a worldwide distributor (outside USA) of Ivan’s  motorcycle performance carb jet kits for Suzuki, Kawasaki and Yamaha. These motorcycle carb. Kits have been designed (exception SV650) to run with the motorcycle’s OEM air filter. All jet kits come complete with needles, jets and any other carb. parts if any modification is needed to the motorcycle’s air box or air filter, full instructions are enclosed.

A word from Ivan:-

"It has always been my goal to get the most performance from whatever bike that I own. Running "good enough" has never been good enough for me. 

Excessive vibration irritates me. So does poor 'closed to part throttle' transition. Experiencing a lag when the throttle is suddenly snapped open while the revs are up can also be frustrating when trying to tune your bike for best
performance.

The reason that we got into Carb Kits is that we were tired of always messing around with the ones that are available elsewhere. It has proven to be a waste of shop time and inevitably, customers were not as happy as they could be.

All of my Carb Kits are thoroughly tested.

By 'thoroughly tested,' we mean:

• Buy the bike, as opposed to borrowing it.

• This ensures that there is no limit on the time and R+D that needs to go into the kit.

• Test it on my dyno

• Test it on the road against another bike, to verify the dyno.

• The dyno is not the last word, the road is!

• Make sure it runs as good in cold weather as hot weather

• Make sure it is smooth, on and off of the throttle

• Modify whichever carb circuit is causing a problem

• No circuit is safe from me!

• Do whatever it takes to make it as best as it can be...

• ...and offer it in one kit

• If there are small changes that need to be made to the needle or an addition angle ground on to it, I DO IT! Most of my needles have between 4 and 6 different tapers on them!!

• I do not release a kit for sale unless I am completely satisfied with how it runs at all throttle openings "

The Ivan's Jet Kit for the Harley Davidson Twin Cam 88 / 80" Evo - Big Twin Harley is  is designed for the stock 40mm CV carb and will work in the Evo 80 inch motors, with the 44mm CV carb too! The kit contains 2 specially designed needles and an assortment of main jets.

V&H pipes Vs. SE Ignition Kit, K&N, Ivans Carb Kit

Stock Vs. 40mm, Ivans Carb Kit, V&H Pipes, SE Ignition System, K&N