Hi,

I just spotted a new 2-1 system from GPR! Well, I don't know for how long it's on the market but it's new to me!

http://www.gpr.it/scheda.php?idcatve...&idveicolo=174
http://www.gpr.it/pdf_report.php?idc...&idveicolo=174

You can pick the silencer type, titanium, stainless steel, carbon etc.

The system is around �500 plus VAT. Less if you opt for the stainless steel version.

The headers and link pipe look very nice to me and the whole system look like a quality one.

I am seriously considering dropping for the stainless steel one. I want the manifolds below the bike as to not mess with melting issues.

The only problem is that I have OTR/SR-Racing 2-1 already fitted, with the titanium silencer. But I am hoping I will manage to sell it.

thats how i might change my home made 2-1 system ,been thinking about it for a while,looks good.

Update, those are old pictures. The complete system comes with the GPE (Grand Prix Evolution) silencer, which looks like this:



Yummy!

A friend had this one made in Oz.

http://www.xt660.com/showpost.php?p=18082&postcount=24

__________________
Click here to join the XT Supporter's scheme

Mods that I have done to my XTX's

My 04 XTX
Stage 1 & 2 DNA filters / Kev fuel mod / snorkel mod / Drilled air box mod / Engine breather mod / Fork Spacer mod / 15w fork oil /
[
My 07 XTX
Raptor 700 cylinder 102mm / Modified Crank Case to take a 105mm Raptor Cylinder / 11:1 102mm JE Raptor piston / Stage 1 Raptor Hot Cam / Ported head / Colder Spark Plug / +2mm Throttle body / DNA stage 1 & 2 filters / Modified Air Box / Snorkel removed / Worry Brothers stage 2 filter cover / 6mm & 8mm Bolts Replaced with Titanium Bolts / Recovered seat in Black / O2 Eliminator /

My 09 XTX
59HP at the rear wheel / Stage 2 Raptor Hot Cam / DNA stage 3 Air Box / Carbon Can Exhausts / Modified Exhaust Link Pipes / PCIII With Custom Fuel Map / Wideband Commander O2 Data logger / LCD100 Dyno Jet display & fuel adjuster / 2500 OHM HT lead instead of a 10K OHM XT lead / Extra Coolant Cooler / Protaper Fat Bars / Tail Tidy With LED Tail Light / OKE Protection Knobs / LED indicators / AIS blocked / Modified rear sprocket rubbers / Rear Foot Pegs removed / 09 ECU With 02 Sensor Changed To A 06 ECU / Complete wiring harnes Changed from 09 to 04 / Home made LED resistor flasher / Hole drilled in the fuel tank filler neck to allow quicker filling / Modified Bar End Weights / Progressive front fork springs, 15W fork oil, forks lowered 25mm, used XTR rear links lowering the rear 20mm, rear spring one click stiffer / Changed front & rear guards from blue to black / 47T rear sprocket / Speedo Healer V4.0 / Kev throttle cam mod / Throttle grip mod / The new 2010 O2 sensor mod is out, works a treat, The new 2012 O2 Controller is out, PM me for details

Now ride a 2018 MT09SP ABS + TCS

My KTM 990 SMR Mod book. http://www.ktmsmt.com/viewtopic.php?f=13&t=4946

very nice,good finish.My 2-1 gives a better punch low down but runs out abit breathless after 85 mph but im happy with that.Would be nice to know what results you find.cheers

Quote:

Originally Posted by Kev A friend had this one made in Oz. http://www.xt660.com/showpost.php?p=18082&postcount=24

this doesn't make sense to me at all!
Why would you create a 2 in 1 with headers still going underneath the engine? a. you still haven't got more ground clearance, b. you will lose power, c. it does make a lot more sound!
It only will save some wheight + different looks

Cheers

Marcel

__________________

Yes, because of less weight, more sound (I see this as a positive aspect), different looks (better), no issues with pipes melting anything etc…

BTW, I changed my opinion. I will not swap my system for anything! Yesterday I gave one guy who works in Yamaha a ride on my bike and when he was returning back, he started to wave his head before he stopped the bike. He said it goes around 50% better than the stock bike and that he can't ****ing believe it…

I also heard the sound for the first time when someone else is riding it, it's quite different then when on the bike, with the helmet. All I can say is that's the best sound I ever heard. Perfect sound! I have baffle removed.

Also I searched the net for some GPR GPE reviews and haven't found anything good. In fact, there was one test in some German magazine for 12 slip-on systems for Bandit and there was GPR GPE in the test, along with the SR-Racing one! The GPE didn't score well (little power, sound to high) and the SR-Racing (the brand I have) was the first (outperforming Akrapovic, Arrow, Remus etc) regarding the power output!

SR-Racing FTW!

I would say for weight saving.

A 2in1 under the engine should produce more HP then a 2in1 with lots of bends, every bend slows down the exhaust gas speed & creates hot spots. Freez is the best person to comment as he has played alot with different exhaust systems set ups on the Raptors.

For my type of riding a 2in2 offers the best results.

__________________
Click here to join the XT Supporter's scheme

Mods that I have done to my XTX's

My 04 XTX
Stage 1 & 2 DNA filters / Kev fuel mod / snorkel mod / Drilled air box mod / Engine breather mod / Fork Spacer mod / 15w fork oil /
[
My 07 XTX
Raptor 700 cylinder 102mm / Modified Crank Case to take a 105mm Raptor Cylinder / 11:1 102mm JE Raptor piston / Stage 1 Raptor Hot Cam / Ported head / Colder Spark Plug / +2mm Throttle body / DNA stage 1 & 2 filters / Modified Air Box / Snorkel removed / Worry Brothers stage 2 filter cover / 6mm & 8mm Bolts Replaced with Titanium Bolts / Recovered seat in Black / O2 Eliminator /

My 09 XTX
59HP at the rear wheel / Stage 2 Raptor Hot Cam / DNA stage 3 Air Box / Carbon Can Exhausts / Modified Exhaust Link Pipes / PCIII With Custom Fuel Map / Wideband Commander O2 Data logger / LCD100 Dyno Jet display & fuel adjuster / 2500 OHM HT lead instead of a 10K OHM XT lead / Extra Coolant Cooler / Protaper Fat Bars / Tail Tidy With LED Tail Light / OKE Protection Knobs / LED indicators / AIS blocked / Modified rear sprocket rubbers / Rear Foot Pegs removed / 09 ECU With 02 Sensor Changed To A 06 ECU / Complete wiring harnes Changed from 09 to 04 / Home made LED resistor flasher / Hole drilled in the fuel tank filler neck to allow quicker filling / Modified Bar End Weights / Progressive front fork springs, 15W fork oil, forks lowered 25mm, used XTR rear links lowering the rear 20mm, rear spring one click stiffer / Changed front & rear guards from blue to black / 47T rear sprocket / Speedo Healer V4.0 / Kev throttle cam mod / Throttle grip mod / The new 2010 O2 sensor mod is out, works a treat, The new 2012 O2 Controller is out, PM me for details

Now ride a 2018 MT09SP ABS + TCS

My KTM 990 SMR Mod book. http://www.ktmsmt.com/viewtopic.php?f=13&t=4946

I'd love an SR system,but the strength of the Euro makes it a crazy price,the sooner we can get a copy made in the UK the better.