**Cannot be used on stock engines.
*Stock air cleaner box cannot be used.
*When installing this product, the stock air cleaner box should not be removed but should be left in place, because the shroud attachment part is required.
*There may be changes in product specifications due to the manufacturer's reasons.
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This product is the original "Big Throttle Body Kit" developed for SP Takegawa's Superhead 4V+R.
It can be compactly installed around the engine without ruining the silhouette of the bike.
No modification of the cowl or wiring is required for installation.

By adopting a Φ34mm big throttle body, the performance of SP Takegawa's Superhead 4V+R can be maximized and the power output can be increased.