Is it me or are B12 throttles slow

[BikeJake]

I've been tinkering and riding,

Enjoying the bike a lot ..I'm just asking this throttle is slow isnt it,I'm ringing it's guts and I realise ..oh... it's not wide open , and there's a bit left.

Anyone swap out the twist grip for anything faster?

[fatblokeonbandit]

so you mean the twistgrip isn't opening the throttle fully?? move your hand round the grip a bit to open it more,, get a QA throttle, or make one of these..

 

 

[Gixer1460]

Apparently R6 or R1 twist grip barrels are 1/3 or 1/4 turn . . . . . . if you like that sort of thing LOL!

[fatblokeonbandit]

Ive used R1 ones several times, But you need the right years... Ill have a look see if i wrote it down !!

[fatblokeonbandit]

I have 98-06 written in the back of my manual??  they ain't cheap though, £25 for a throttle tube???

[wraith]

Yes I've used the same one as FBB has, with bandit switch gear. They are better but I ended up get a cheep Chinese QA off the bay and a YZF600 switch gear, so you keel the same spacing.

[BikeJake]

So a 96-06 R1 Throttle tub inside the original switch block? 

[fatblokeonbandit]

It was many years ago, but I reckon that’s why I wrote that in my manual. Had it fitted to mine for a while until,I made an insert that was bigger diameter, like in the picture 

[coombehouse]

2004 R1. Mt09, xt660

Yamaha Part #: 4YR-26240-02. 

Colour: Black.

Diameter of cable pulley: 36.5mm.

Turn: 1/5

Alternatively 5sl-26240-01 is the same

 

2006 R6.

Yamaha Part #: 2CO-26240-00. 

Colour: White.

Diameter of cable pulley: 40.5mm.

Turn: 1/6

May need additional clearance inside switch housing & messing with throttle cable length

Edited July 4, 2023 by coombehouse

[Rncv]

Go and buy a domino xm2 QA throttle and a set of domino cables. 
they have changeable parts for the throttle tube to go from street>slightly quicker street>track 

also the cables have the best feel I’ve found so far from OEM, venhill and domino.  The throttle is buttery smooth and worth every penny.