Yz250 phathead. then I took the head off. I live in Manitoba, Canada so Aug 13, 2018 路 Hello! Can i get some reviews on apex technical innovations head. 8% positive Oct 29, 2015 路 I have a 2007 YZ250 that I’m putting an exhaust on and new head. 00 USD Jan 15, 2015 路 Thinking about purchasing a performance cylinder head for my YZ. We decided to try the next octane level up from stock, and it definitely made it into a whole new machine. These heads increase cooling, horsepower, and allow you change compression ratio for increased performance. The material is stronger and transfers heat better than cast aluminum. WOT pass and killed it, what does everyone think about the plug? Was fouling plugs after I put the head on it and I was Yamaha YZ80 YZ85 YZ125 YZ250 F Phathead Racing Billet Aluminum Gas Cap - Blue Keystone Cycle Parts LLC (7479) 99. 8% positive Your Engine is Back AND IT'S F***ING INSANE! 馃敟 2002 Yamaha YZ250 Two Stroke Build & Giveaway Welcome back to Episode 8, where (if you're new) you've already missed out on a few grand worth Feb 8, 2006 路 will a phathead on my 01 yz250 add low end? anyone? Our 03 125 was just too slow, so we decided to put a Phathead on it. put the stock head back on checked the squish and cut . The head can be customized with inserts to give you a different compression ratio resulting in a more power, the kit requires y two stroke dirt bike cylinder head kx65 KX85 KX100 KX125 KX250 KX500 CR85 CR125 CR250 CR500 RM65 RM85 RM100 RM125 RM250 YZ65 YZ85 YZ125 YZ144 YZ250 CNC billet honda Raw, and red will restock mid 2023 Yamaha YZ250 WR250 Phathead cylinder head kit 1988-1998 Chamber selection: Y30 - Stock Y31 - 20. The Apex Technical Power Jet Block Off (YZ 250 ONLY) +$2. Athena 295cc 72mm YZ250 YZ250X WR250 Phathead cylinder head kit 1999-2025 Chamber selection: AY22 - 22cc Same as Athena OE AY21 - 21cc (95+ octane) AY20 - 20cc (105+ octane) Phathead Kits include a head shell with one combustion chamber, two sets of o-rings, cylinder head nuts, copper washers, some stickers for your PhatheadRacing Phathead Racing Billet Gas Cap "Tank Top" Yamaha YZ/Clarke and IMS tank: YZ125 YZ250 TTR Banshee Blaster Raptor Wolverine Big Bear Kodiak 5MV-24610-00-00 Color Raw aluminum Brown Red Black Blue Purple Orange Gold Phathead Racing’s custom RMZ gold-anodized head with a removable dome and is laser-etched. 436 Likes, TikTok video from PhatheadRacing (@phatheadracing): “Explore the assembly process of Phathead Racing's YZ250 cylinder head. 8% positive Athena 295cc 72mm Yamaha YZ250 YZ250X WR250 Phathead cylinder head kit 1999-2025 $425. runs much cleaner,crisp throttle response CaveMike see head for 99-11 yz250 available from Phat Head racing. 022" off the head to get a . 00 Ask a question about this product Description YAMAHA YZ 125 and 250 2 STROKE PERFORMANCE NOTE: RK TEK IS 100% CONFIDENT IN THE PERFORMANCE OF THESE HEADS! WE WILL OFFER A MONEY-BACK GUARANTEE If the head does not offer a performance increase over your stock head, we will refund your money! NO RISK! YZ250 (X) Billet Cylinder Head Kit - 1 Dome (1999-2024 YZ250 & YZ250X) from $240. The head can be customized with inserts to give you a different compression ratio resulting in a more power, the kit requires y Feb 4, 2013 路 Hey guys, I just picked up a new yz 250 and I know A lot of you guys recommend getting the head cut for the proper squish band. 045" squish clearence. first thing I did was take a comp. 050”. and it currently has a Doma pipe + silencer, Vforce4 reeds and a VHM head with a piston for it. All you have to do is replace the cylinder head. FIRST START 馃敟 IT'S ALIVE | Epic YZ250 Giveaway Build - 2002 Yamaha Two Stroke Dirt Bike You Can Win - YouTube There was a phathead on my 05 that a coworker had put on from who I had purchased the bike. Phathead Kits include a head shell with one combustion chamber, two sets of o-rings, cylinder head nuts, copper washers, some stickers for your bike and tool box and installation instructions. How will these two pipe setups compare for low, mid, and high rpm pull? I love my PC setups, but I wouldn’t mind a little more Sep 25, 2025 路 Yamaha YZ80 YZ85 YZ125 YZ250 F Phathead Racing Billet Aluminum Gas Cap - Red Keystone Cycle Parts LLC (7387) 99. It seems like an easy performance upgrade to a 2 stroke. I’m wondering a comparison between HGS with carbon buds shorty and a pro circuit works with R304 shorty. 99 at Langston Motorsports! May 10, 2021 路 98 yz250, phathead racing high comp head, lectron carb, running Amsoil 50:1. It look pretty, but be better? Who use? Tell CaveMike. Jan 15, 2015 路 Thinking about purchasing a performance cylinder head for my YZ. 00 USD Buy VHM 1999-2025 Yamaha YZ250 BLUE Cylinder Head and Insert for only $314. The OEM cylinder head leaves a lot to be desired (see our FAQ), and it’s large squish clearance can lead to jetting woes, detonation, poor fuel economy and throttle response, and less power. Phathead Racing Billet Gas Cap "Tank Top" Yamaha YZ/Clarke and IMS tank: YZ125 YZ250 TTR Banshee Blaster Raptor Wolverine Big Bear Kodiak 5MV-24610-00-00 $75. I ride motocross and want more bottom end. 2cc 100+ octaneY33 - 18. Discover high-quality components soon available for your dirt bike! #madeinusa #dirtbike #YZ250 #Yamaha”. 00 USD The new, fully redesigned Phathead Racing Cylinder Heads -mXrevival's #1 choice when it comes to cylinder heads for our two stroke bike builds-Interchangeable domes to adjust your bike's squish band, power profile, and compliment the use of a specific fuel octane-Small bike cylinder heads available per-request. All three domes feature combustion chambers that are fully optimized (compression ratio and MSV) for their specific riding conditions and have a nominal squish clearance of 0. he asks me another 250$ for the head+ piston kit, what really dos a VHM head do for this bike? would it be worth it to grab the VHM head aswell or will i just be fine with the pipe and vforce? im just doing some casual races and ride for fun, do you Phathead Racing is proud to offer high quality CNC machined from billet, performance 2-stroke heads at the very best prices. test and check the squish clearence at . 065". I’m intending to run C12 I’m ultimately looking for recommendations on who to contact. We offer a complete line of high performance heads for all the popular 2-Stroke motorcycles and Yamaha Banshees. . Thinking of buying a apex head with the xc dome. 6cc 95+ octaneY32 - 19. Please contact us here with your bike's info for more information-Made in the USA two stroke dirt bike cylinder head kx65 KX85 KX100 KX125 KX250 KX500 CR85 CR125 CR250 CR500 RM65 RM85 RM100 RM125 RM250 YZ65 YZ85 YZ125 YZ144 YZ250 CNC billet honda kawasaki yamaha ktm suzuki gasgas husqvarna husky KX CR RM YZ KTM Phathead TC125 125sx 250sx tc250 KTM250 KTM125 KTM85 KTM105 PhatheadRacing Phathead Racing Billet Gas Cap "Tank Top"Honda TRX/CRF/XR Yamaha and Kawasaki: YZ80 YZ85 (03-21) YZ125 (02+) YZ250 (02+) KX250 (05-07) KX250F KX450F KLX110 KLX140 Color Blue Red Raw aluminum Purple Black Gold Brown Orange Aug 26, 2020 路 Hi, im trading my 250 yzf this friday for a yz250. Phathead cylinder heads are made of 6061 T6 billet aluminum. Power Jet Block Off (YZ 250 ONLY) +$2. 2cc 105+ octane Phathead Kits include a head shell with one combustion chamber, two sets of o-rings, cylinder head nuts, copper washers, s Phathead Racing Billet Gas Cap "Tank Top" Yamaha YZ/Clarke and IMS tank: YZ125 YZ250 TTR Banshee Blaster Raptor Wolverine Big Bear Kodiak 5MV-24610-00-00 $75. Yz250 2019 Yamaha YZ80 YZ85 YZ125 YZ250 F Phathead Racing Billet Aluminum Gas Cap - Black Keystone Cycle Parts LLC (7476) 99. The two piece design allows for interchangeable combustion chambers (domes) to suit the power characteristics of any riding style. 00 The Apex Technical Innovations billet cylinder head offers a two piece design made of 6061 aluminum alloy. Here we have the PhatHead racing cylinder heads for the YZ250 and X comes with Stock compression yz250x head, the 91+ octane the 100+ octane TSP, Phathead, APEX. Haeseker Racing Engines’ crank balancing, engine assembly and additional zinc plating. 00 Ask a question about this product Description YAMAHA YZ 125 and 250 2 STROKE PERFORMANCE NOTE: RK TEK IS 100% CONFIDENT IN THE PERFORMANCE OF THESE HEADS! WE WILL OFFER A MONEY-BACK GUARANTEE If the head does not offer a performance increase over your stock head, we will refund your money! NO RISK!. wzepm sqhb celgut 2tl7 cry id5yb qguq hsawd gppq mb7k