Yamaha YXZ

AR8695 - Yamaha YXZ/Sidewinder / Textron XX (16-up) ARP2000 Head Stud Kit

Made from ARP2000 material and rated to 220,000 psi, ARP cylinder head studs not only offer super...

Made from ARP2000 material and rated to 220,000 psi, ARP cylinder head studs not only offer superior clamp loads over cylinder head bolts, they provide proper alignment of the head and gasket with more accurate and consistent torque loading. Bolts will actually twist while torquing to proper spec, greatly reducing their ability to hold true.

BC0950 - Yamaha 998 Dual Spring/Steel Retainer/Seat Kit

Kit is intended for OEM shim in retainer setup. Designed for high rpm, BC valve springs by PAC Ra...

Kit is intended for OEM shim in retainer setup. Designed for high rpm, BC valve springs by PAC Racing are wound from only the highest grade, super clean, chrome silicone alloy and feature proprietary processing procedures for consistent pressures. BC retainers are machined from premium 6AL4V titanium alloy for added valve control above 10,000 rpm. Type BC1950 Dual Free Length 1.572" Outer/1.339" Inner Seat 1.265" @ 76 lbs Open 0.850" @ 192 lbs Coil Bind 0.715" Retainer BC2905H ...

BC0951 - Yamaha YXZ / 998 (16-up) Stage 2 Mild Duner/Trail Spec Camshafts

Designed for mild duner and trails where focus is more on the lower powerband. Works with stock v...

Designed for mild duner and trails where focus is more on the lower powerband. Works with stock valve train and stock ECU, although reflash will deliver optimum results. Adv Dur (.020") 248°/248° Dur @ .050 228°/228° Valve Lift (1:1) .350"/.350" Valve Lift (mm) 8.89/8.89

BC0953 - Yamaha YXZ / 998 (16-up) Stage 3 Turbo Spec Camshafts

Pick up 30+whp over the Viper cams at 30psi with this BC turbo spec. High lift, shorter duration ...

Pick up 30+whp over the Viper cams at 30psi with this BC turbo spec. High lift, shorter duration profile to build cylinder pressure under big boost. Tuning and ECU mods recommended. Requires BC0950B (shim in bucket) or BC0950 (shim in retainer). Adv Dur (.020") 252°/252° Dur @ .050 232°/232° Valve Lift (1:1) .370"/.370" Valve Lift (mm) 9.40/9.40

BC0955 - - YAMAHA YXZ/SIDEWINDER (16-up) STOCK STROKE KIT w/BC ProH2K RODS, SHELF PISTONS...

Includes 4340 billet crank, 66.2mm stock stroke, ProH2K rods (19mm Pin), and Shelf CP pistons (ch...

Includes 4340 billet crank, 66.2mm stock stroke, ProH2K rods (19mm Pin), and Shelf CP pistons (choice of bore/compression). REQUIRES SIDEWINDER OIL PUMP/SPROCKET (BC8805). Crank # BC5950 - 66.2mm (4340 billet) Rod # BC6951 - ProH2K w/19mm Pin and ARP2000 Bolts Piston # BC7951 - Shelf CP Pistons (specify compression)  

BC0957 - YAMAHA YXZ/SIDEWINDER (16-up) STROKER KIT w/CARRILLO RODS, CUSTOM PISTONS w/ALL H...

Includes 4340 billet crank, 71mm stroke, Carrillo rods (19mm Pin), and custom pistons (choice of ...

Includes 4340 billet crank, 71mm stroke, Carrillo rods (19mm Pin), and custom pistons (choice of bore/compression). REQUIRES SIDEWINDER OIL PUMP/SPROCKET (BC8805). Crank # BC5951 - 71mm (4340 billet) Rod # CA6952 - Carrillo w/19mm Pin and Carr Bolts Piston # BC7951 - Custom (specify bore and compression)  

BC0958 - YAMAHA YXZ/SIDEWINDER (16-up) STROKER KIT w/BC PRO625+ RODS, CUSTOM PISTONS w/ALL...

Includes 4340 billet crank, 71mm stroke, ProH625+ rods (19mm Pin), and custom pistons (choice of ...

Includes 4340 billet crank, 71mm stroke, ProH625+ rods (19mm Pin), and custom pistons (choice of bore/compression). REQUIRES SIDEWINDER OIL PUMP/SPROCKET (BC8805). Crank # BC5951 - 71mm (4340 billet) Rod # BC6952 - w/19mm Pin and 625+ Bolts Piston # BC7951 - Custom (specify bore and compression)  

BC3850 - Yamaha YXZ / Textron XX Stainless Steel Intake Valves - 31mm (STD)

BC valves are one piece design with a friction welded Stellite tip for the best possible performa...

BC valves are one piece design with a friction welded Stellite tip for the best possible performance. Every valve is made from premium grade, heat resistant stainless steel material to insure reliability with high boost and/or high rpm applications. The undercut stem above the head area not only reduces overall weight for extended rpm potential, but also significantly improves air/fuel flow in and out of the combustion chamber. Every valve is fully machined and features a swirl polished finis...

BC3853N - Yamaha YXZ / Textron XX Inconel Exhaust Valves - 27mm (STD)

BC valves are one piece design with a friction welded Stellite tip for the best possible performa...

BC valves are one piece design with a friction welded Stellite tip for the best possible performance. Every valve is made from premium grade, extreme heat resistant Inconel NCF751 alloy or Inconel material to insure reliability with high boost and/or high rpm applications. The undercut stem above the head area not only reduces overall weight for extended rpm potential, but also significantly improves air/fuel flow in and out of the combustion chamber. Every valve is fully machined and feature...

BC5951 - YAMAHA YXZ/SIDEWINDER (16-up) BILLET CRANKSHAFT (71mm STROKE)

These cranks are precision balanced if ordered as a BC stroker kit, bobweights required if using...

These cranks are precision balanced if ordered as a BC stroker kit, bobweights required if using own piston and/or rod combo. 4340 billet crankshaft in +4.8mm stroke (71mm). MUST USE WITH SIDEWINDER OIL PUMP/SPROCKET. All cranks are stress relieved, shot peened, magna flux inspected and nitrided (multi step heat treatment) for ultimate performance. Fully profiled counterweights are designed for reduced windage through the crankcase creating less oil resistance for better rpm potential. These...

BC6952 - Yamaha YXZ / Textron XX (16-up) Pro625+ Connecting Rods w/ARP625+ Fasteners

Yamaha YXZ / Textron XX - Pro625+ Custom Age 625+ Fasteners. Made from aerospace grade, 4340 chro...

Yamaha YXZ / Textron XX - Pro625+ Custom Age 625+ Fasteners. Made from aerospace grade, 4340 chromoly steel, BC high performance connecting rods deliver the reliability required for high rpm applications. Every rod is CNC machined, micropolished surface finish treatment, equipped with Aluminum/Silicone/Bronze pin bushings and finish honed to exacting tolerances. C-to-C 4.665" BE Bore 1.6142" BE Width 0.887" PE Bore 0.748" PE Width 0.800" Gram Wt 428 Torque Specs 30 ft lbs - 5/1...

BC6953T Yamaha YXZ Titanium Connecting Rods w/ARP625+ Fasteners

Get them before Tech changes the rule book! Titanium rods for the YXZ designed for high rpm short...

Get them before Tech changes the rule book! Titanium rods for the YXZ designed for high rpm short course racing, delivers instant throttle response in and out of the corners and a lighter rotating mass for acceleration down the straights. Features ARP CustomAge 625+ fasteners for peace of mind above 11,000 rpm. C-to-C 4.665" BE Bore 1.6142" BE Width 0.887" PE Bore 0.748" PE Width 0.800" Gram Wt 325 Torque Specs 45 ft lbs - 5/16"

BC6955 - Yamaha YXZ / Textron XX (16-up) Pro625+ Connecting Rods w/ARP625+ Fasteners - 20m...

Yamaha YXZ / Textron XX - Pro625+ Custom Age 625+ Fasteners in 20mm wrist pin diameter. Made from...

Yamaha YXZ / Textron XX - Pro625+ Custom Age 625+ Fasteners in 20mm wrist pin diameter. Made from aerospace grade, 4340 chromoly steel, BC high performance connecting rods deliver the reliability required for high rpm applications. Every rod is CNC machined, micropolished surface finish treatment, equipped with Aluminum/Silicone/Bronze pin bushings and finish honed to exacting tolerances. C-to-C 4.665" BE Bore 1.6142" BE Width 0.887" PE Bore 0.787" /20mm PE Width 0.800" Gram Wt 4...

BC8297 - Yamaha YXZ (80mm x .052”) Cometic Head Gasket

80mm cyl bore, .052” Thickness - Cometic three layer gaskets combine advanced materials with stat...

80mm cyl bore, .052” Thickness - Cometic three layer gaskets combine advanced materials with state-of-the-art manufacturing processes to provide custom-tailored solutions to meet the needs of each individual application. The MLS head gasket is comprised of a three layer setup - Viton coated embossed spring steel outer layers surround a steel inner layer that provides support and thickness to the gasket. Embossments on the gasket allow for a proper seal around oil and water passages.

BC8299 - Yamaha YXZ (82-83mm x .027”) Cometic Head Gasket

82-83mm cyl bore, .027” Thickness - Cometic three layer gaskets combine advanced materials with s...

82-83mm cyl bore, .027” Thickness - Cometic three layer gaskets combine advanced materials with state-of-the-art manufacturing processes to provide custom-tailored solutions to meet the needs of each individual application. The MLS head gasket is comprised of a three layer setup - Viton coated embossed spring steel outer layers surround a steel inner layer that provides support and thickness to the gasket. Embossments on the gasket allow for a proper seal around oil and water passages.

BC8885DLC - Yamaha YXZ (16-up) Cam Bucket Followers w/DLC Coating

Due to the notorious bucket wear issues on the YXZ, BC only offers shim in buckets with DLC coati...

Due to the notorious bucket wear issues on the YXZ, BC only offers shim in buckets with DLC coating. Requires BC spring/retainer kit BC0950B in order to use. Made from aerospace grade, 4140 chromoly steel alloy and completely CNC machined from heat-treated billet round bar. Heavy-duty wall thickness eliminates distortion and cam face depression, while reducing overall weight from non-critical stress areas. Nitrided and polished to a surface hardness of 60RC for minimal wear. Provides lower fr...

BC9053 - ARP Yamaha YXZ Front and Rear Shock Fastener Kit

BC x ARP exclusive front and rear shock kit for the Yamaha YXZ. Features 12pt, polished stainless...

BC x ARP exclusive front and rear shock kit for the Yamaha YXZ. Features 12pt, polished stainless steel bolts rated to 180,000psi, far superior to the Grade 8 stock bolts and a way better look. Fits all Yamaha YXZ's (16-up)

BME1096 - Yamaha YXZ / Textron XX (16-up) BME Shelf Pistons w/All Hardware - 80mm x 11.5:1

While BME's flagship piston products are NASCAR and road racing pistons, Bill Miller Engineering'...

While BME's flagship piston products are NASCAR and road racing pistons, Bill Miller Engineering's cutting-edge technology and premium quality wins races in another motorsport which is a grueling test of pistons: blown-fuel drag racing. In fact, drag racing was the first market for the BME Forged Aluminum Racing Piston. Ever since legendary, dragster and funny car crew chief, the late Dale Armstrong, switched to BME in the 1980s, blown-fuel racers have used BME Pistons in their engines. Since...

CA6952 - Yamaha YXZ / Textron XX (16-up) Carrillo Straight-H Connecting Rods w/CARR Bolts ...

Polaris XP Turbo - Carrillo Connecting rods were founded by Fred Carrillo in 1963. Fred approach...

Polaris XP Turbo - Carrillo Connecting rods were founded by Fred Carrillo in 1963. Fred approached the challenges of manufacturing with the idea of no compromise. He knew the never ending quest for speed would require the same desire in component manufacturing. This Carrillo philosophy is as evident today as it was at Carrillo’s conception in 1963. Quality and pride go hand-in-hand at CP-Carrillo. Manufacturing a CP-Carrillo rod is much more than cutting a forging, meeting production goals a...

CP1096 - Yamaha YXZ / Textron XX (16-up) CP Shelf Pistons w/All Hardware - 80mm x 12.5:1

Pistons are the backbone of any true hardcore racing engine and that’s where CP-Carrillo excels. ...

Pistons are the backbone of any true hardcore racing engine and that’s where CP-Carrillo excels. Our Engineering department started off analyzing the competition, gathering industry data and deciding to make the highest level of pistons, period. The heart and soul of our pistons are built through our Engineering Department and its resources. This department is made up of several factors that push them ahead of the competition; Reverse Engineering, Design Experience and Flexibility, Analysis a...

CP1098 - Yamaha YXZ / Textron XX (16-up) CP Shelf Pistons w/All Hardware - 80mm x 10.5:1

Pistons are the backbone of any true hardcore racing engine and that’s where CP-Carrillo excels. ...

Pistons are the backbone of any true hardcore racing engine and that’s where CP-Carrillo excels. Our Engineering department started off analyzing the competition, gathering industry data and deciding to make the highest level of pistons, period. The heart and soul of our pistons are built through our Engineering Department and its resources. This department is made up of several factors that push them ahead of the competition; Reverse Engineering, Design Experience and Flexibility, Analysis a...

BC9951 - Yamaha YXZ/998 NEW CNC Cylinder Head - Big Port 31mm/27mm Valves

Use pulldowns above to build out your head. The BC core exchange program works three ways: 1) Bu...

Use pulldowns above to build out your head. The BC core exchange program works three ways: 1) Buy one of BC's new heads outright, no exchange. 2) Send a new head in for even exchange for one of BC's new "in-stock" heads. 3) Send a used head in, receive that same head back. BC only accepts new, never-been ran Yamaha heads (#2HC-11101-09-00) cylinder heads as new core exchanges. BC uses only new heads for all new even exchanges. All heads come with BC bronze valve guides installed as well as S...