The best track and road modifications for Honda's RC51 (SP2) motorcycle
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- Опубликовано: 4 фев 2020
- Jay is one of the UK's foremost experts on upgrading the Honda RC51, or SP2. In this short video he speaks with fellow owner Adam Smallman about the changes that matter on track and which of those are best for road use.
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I race for many years with my SP2 at the Dutch circuit in Assen. 3 years IDC Dutch championship Sportclass. and a lot of trackday's I love my bike !
I have an SP2 and the guy is absolutely spot-on great advice...👍🏻😎
The best modification that I made to my SP-2 was the fitting of magnesium alloy wheels,and replacing the rear shock with a Fiske unit,enhanced the handling beautifully.
Hi, why did you fit magnesium alloy instead of carbon wheels? Thanks
@@Ignas2fly Basically,it was down to the cost,the carbon wheels were very pricey.
Still one of the best looking bikes the sp1 especially underpriced vs rc30 or rc45 considering it's a wsbk champion in America they called it the rc51
I need a set of those plastics!
Good mods, I would add remove quieting gears and a crankcase release valve (HD drag racers use them) good for another 2.5 rwhp. Biggest problem is the stock ECU and cooling once mods are done. Don't know anyone who has unlocked the ECU?
I never have had trouble turning into corners,the bike goes
were i put it,only had it from new for just 20 year's not long i know ,two many experts have opinion's obviously i know nothing .I don't see many passing me on the track .standard rd bike straight through exhaust ,supper oct petrol, Castrol t4 race oil ,standard rd setup. 13 st ride 'r
CAN YOU GET THE BLUEPRINT OF THE 2006 SP2 BLOCK? I want to make it from Magnesium alloy,,,
Are the airscoops enough for trackuse or better to put an radiator kit for example from febur?
Scoops are more than enough unless you live somewhere very hot.
An incredible video, will do the same with mine sp1 in 2-3 years time. Starting from bst carbon wheels. Why does this guy use magnesium?
Hi there, Jay uses - as do I - Dymag aluminium wheels.
Adding answer. We both use Dymag aluminium as carbon is at risk of ham-fisted tyre fitters.
@@adamsmallman9602 Hi is it really such a fragile process? Or if it done by poper mechanic taking time will be ok?
Wich exhaust system is? brand?
Hi. Who is this guy Jay? Sounds like he knows his stuff?
Thanks
WHAT do we need to do to reduce its weight to 179 kg with full tank of fuel... I assume 164kg dry,, ( what do I need the change or take off to get to 164kg dry)
Assuming yours is standard, replacing the weighty cans (I use Arrows), wheels (Dymag UP7X aluminium - carbons if you feel confident they can be looked after during tyre changes), battery (if you can find a reliable lithium brand) and aftermarket aluminium clip-ons will help. After that, it's harder to make the difference cost-effectively.
Wheels, exhaust, remove side stand, half the subframe, lipo battery, lights, horn, air injector nonsense, race loom, titanium bolts everywhere, Renthal bars, 520 C&S conversion, carbon where possible, lighter brake calipers, rear underslung kit, Brembo RCS and levers, SBK discs, T1 airbox, billet rearsets, no pillion pegs or provision, yokes, track bodywork. Then lighter, pistons, crank, rods, cams, remove quieting gears.. that's a start to lose the weight 😁
@@mjaymo 🤓😆👌
@@mjaymo Or brake later, lol
I have the radiator fins ..but I hear yeah they work..and no they don’t !
They do if you have pusher fans, not so much if you have OEM pullers
400Kg less than stock, that's huge.
Jeezzzz my 2019 well modded gets 184hp 84tq at the rear. that's 50 more hp.
Not a VTR
I find it very difficult to believe that his bike is FOURTY kilos lighter than standard! I know the exhaust is heavy, but other than that and maybe 1 or 2 kg in the wheels, where the hell is the extra 20-30kg coming from?!
I think he ment if full tank vs dry weight when reduced weight 🙂 40kg definately too much. My durbahn sp with carbon seat unit, and 10ltr plastic tank under seat with carbon tank dummy, full carbon fairings, battery, light wheels, full titanium exhaust and etc.: small things weighs 163 dry