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The famous BIG BORE ATHENA, 290cc of pure power and torque for your Yamaha 250cc 4T.
Complete kit ATHENA high quality high performance! Aluminum cylinder with high quality Nicasil treatment, made in Italy.
VERTEX piston, high compression graphite with pre-ground steel segmentation!
Joint ATHENA (one of the best seal manufacturer in the world), we are clearly on the very top of the range.
The increase of the cubic capacity, the compression as well as the reduction of the friction, the temperature in the room will offer more performances to your machine!
Here, it is not really the maximum power gain that is sought after! The power comes sooner, faster, and a good increase in torque is present!
It's all that make it a very robust and powerful kit. Mounts with the original cylinder head without modification of the latter.
At the bottom of the page, you will find all the spare parts for this kit. The piston, the segments, the seal pocket ...
Mounts on :
Off-road Yamaha WR 250 F - 2001/2012
Off-road Yamaha YZ 250 F - 2001/2007
Reference: P400485160007
Top engine gasket kit ATHENA for 290cc kit from your YAMAHA YZ 250 F - 2001/2007 and WR 250 F - 2001/2012.
Reference: S4F08300001A
Spare piston on the kit Ø3.2cc Ø83mm ATHENA racing for YAMAHA YZ 250 F - 2001/2007 and WR 250 F - 2001/2012.
Reference: S41316133
Spare segment for the ATHENA 275cc Ø83 mm kit for moto cross YAMAHA YZ 250 F - 2001/2007 and WR 250 F - 2001/2012.
Reference: P400510100018
A good big kit of your good quality and offering good performance on your MASH, SUZUKI GZ, GN, GS, DR, quad LTZ, BULLIT, HOOPER, VAST, SINNIS ... 125cc 4T air cooled motorcycles! Nicasil treated aluminum, made in Italy, very high performance!
Reference: R-H4E09-0R
Ideal for gaining performance with ease!
Reference: 75094TKR
The complete titanium exhaust line the most efficient at ARROW! High performance, ultra light, the top for your motocross Suzuki RM-Z 450 2011 to 2013
Reference: R0409B-9
NGK R0409B-9 spark plug for better performance on your 4T motocross!
Reference: P400485100026
The famous BIG BORE ATHENA, 290cc of pure power and torque for your Yamaha YZ 250 F from 2008 to 2013 4T.
Reference: HF207
Quality oil filter for optimal filtration!
Reference: C4T066G-H2
High performance stainless steel line for GASGAS FSE, FSR, EN DURO , SM 450 from 2009 to 2012. Double carbon silencers!
Reference: S41400001
High quality ATHENA distribution chain for the maintenance of your Suzuki RM-Z 450 motocross bike from 2005 to 2018 and RMX-Z 450 from 2010 to 2018.
Reference: P-Y4E14-S2
A quality DNA AIR FILTER P-Y4E14-S2 air filter for your Yamaha YZ 250/450 F, FX, WR 450 F bike.
Reference: S41400003
High quality ATHENA distribution chain for the maintenance of your Kawasaki KX-F crossover motorcycle, Gas Gas EC, Yamaha YZF, WR-F, Suzuki RM-Z 250cc.
Reference: CIL-1017HC
BARIKIT RACING 250cc piston cylinder kit on your SUZUKI RMZ 250 motocross from 2010 to 2017, HIGH COMPRESSION version.
Reference: R-K4E06-01
Ideal for easy performance gains with the DNA RACING Air Filter R-K4E06-01!
Reference: R-H4MX13-0R
Ideal for gaining performance with ease!
Reference: CIL-1005HC
BARIKIT 250cc piston cylinder kit on your motocross HONDA CRF R from 2010 to 2013, high compression version.
Reference: S41316181
Spare segment for the 280cc Ø82 mm ATHENA kit for the HONDA CRF R 250cc from 2010 to 2017.
Reference: 72528XKI
ARROW X-KONE exhaust silencer RACING carbon look, ideal to increase your performance! Specially designed to be mounted on your Honda CRF 250 L 2017 4T.
The famous BIG BORE ATHENA, 290cc of pure power and torque for your Yamaha 250cc 4T.
