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.

AR8795 - Yamaha YXZ (16-up) ARP2000 Case Main Stud Kit

Does not require lineboring your crankcase. Made from ARP2000 material and rated to 220,000 psi, ...

Does not require lineboring your crankcase. Made from ARP2000 material and rated to 220,000 psi, ARP case studs not only offer superior clamp loads over factory torque to yield bolts, they provide more accurate and consistent torque loading. Bolts will actually twist while torquing to proper spec, greatly reducing their ability to hold true.

BC0950B - Yamaha 998 Dual Spring/Steel Retainer/Seat Kit

Kit is intended for shim in aftermarket bucket setup. Designed for high rpm, BC valve springs by ...

Kit is intended for shim in aftermarket bucket 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 4140 chromoly steel for the ultimate in reliability. Also includes steel valve spring seats. Type BC1950 Dual Free Length 1.572" Outer/1.339" Inner Seat 1.265" @ 76 lbs Open 0.850" @ 192 lbs Co...

BC0952 - Yamaha YXZ / 998 (16-up) Stage 3 Viper+ Spec Camshafts

Added duration, lift and faster opening ramp speeds than the OEM Viper cam specs. Requires ECU tu...

Added duration, lift and faster opening ramp speeds than the OEM Viper cam specs. Requires ECU tuning and other mods to benefit performance. Requires BC0950B (shim in bucket). Yamaha OE Viper Spec: 240°/232° @ .050” / .372”/.353” Lift Adv Dur (.020") 266°/260° Dur @ .050 254°/244° Valve Lift (1:1) .387"/.380" Valve Lift (mm) 9.83/9.65

BC0954 - YAMAHA YXZ/SIDEWINDER (16-up) STOCK STROKE KIT w/BC PRO625+ RODS, SHELF PISTONS w...

Includes 4340 billet crank, 66.2mm stock stroke, ProH625+ rods (19mm Pin), and Shelf CP pistons (...

Includes 4340 billet crank, 66.2mm stock stroke, ProH625+ rods (19mm Pin), and Shelf CP pistons (choice of bore/compression). REQUIRES SIDEWINDER OIL PUMP/SPROCKET (BC8805). Crank # BC5950 - 66.2mm (4340 billet) Rod # BC6952 - w/19mm Pin and 625+ Bolts Piston # BC7951 - Shelf CP Pistons (specify compression)  

BC0956 - - YAMAHA YXZ/SIDEWINDER (16-up) STOCK STROKE KIT w/CARRILLO RODS, SHELF PISTONS ...

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

Includes 4340 billet crank, 66.2mm stock stroke, Carrillo rods (19mm Pin), and Shelf CP pistons (choice of bore/compression). REQUIRES SIDEWINDER OIL PUMP/SPROCKET (BC8805). Crank # BC5950 - 66.2mm (4340 billet) Rod # CA6952 - Carrillo w/19mm Pin and Carr Bolts Piston # BC7951 - Shelf CP Pistons (specify compression)  

BC0958-20 - YAMAHA YXZ/SIDEWINDER (16-up) STROKER KIT w/BC PRO625+ RODS, CUSTOM PISTONS w/...

Includes 4340 billet crank, 71mm stroke, ProH625+ rods (20mm Pin), and custom pistons (choice of ...

Includes 4340 billet crank, 71mm stroke, ProH625+ rods (20mm Pin), and custom pistons (choice of bore/compression). REQUIRES SIDEWINDER OIL PUMP/SPROCKET (BC8805). Crank # BC5951 - 71mm (4340 billet) Rod # BC6952 - w/20mm Pin and 625+ Bolts Piston # BC7951 - Custom (specify bore and compression)   CP Pistons that are in stock for above stroker kit: 80mm x 9.5:1 or 82mm x 9.5:1

BC0959 - YAMAHA YXZ/SIDEWINDER (16-up) STROKER KIT w/BC MOAR RODS, CUSTOM PISTONS w/ALL HA...

Includes 4340 billet crank, 71mm stroke, MOAR rods (21mm Pin), and custom pistons (choice of bore...

Includes 4340 billet crank, 71mm stroke, MOAR rods (21mm Pin), and custom pistons (choice of bore/compression). REQUIRES SIDEWINDER OIL PUMP/SPROCKET (BC8805). Crank # BC5951 - 71mm (4340 billet) Rod # BC6953 - w/21mm 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 (+1mm)

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...

BC4905 - Yamaha YXZ / 998 Rod Bearings (Brown Stock Replacement) set/6

  BC Exclusive Yamaha 998 Rod Bearings by ACL - Brown New ACL Race Series rod bearings for th...

  BC Exclusive Yamaha 998 Rod Bearings by ACL - Brown New ACL Race Series rod bearings for the Yamaha 998 engine (YXZ, SideWinder, Viper, Nytro, Vector, Venture, Viking, VKPro, WaveRunner V1, VK, VX, EX, FJR1300, Rage, Wolverine) are available exclusively through BC. These are equivalent to Yamaha Brown (5JW-11656-20-00) in terms of sizing and fit just about every model that utilizes the 998 Genesis world platform engine. ACL Race Series performance engine bearings are manufactured to exa...

BC5950 - YAMAHA YXZ/SIDEWINDER (16-up) BILLET CRANKSHAFT (66.2mm 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 stock stroke (66.2mm). 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...

BC6951 - Yamaha YXZ / Textron XX (16-up) ProH2K Connecting Rods w/ARP2000 Fasteners

Yamaha YXZ / Textron XX - ProH2K w/ ARP2000 Fasteners. Made from aerospace grade, 4340 chromoly s...

Yamaha YXZ / Textron XX - ProH2K w/ ARP2000 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 28-30 ft lbs - 5/16"

BC6953-SPL - Yamaha YXZ/998 (16-up) MOAR Connecting Rods w/ARP625+ Fasteners, 20mm Pin

This design features a 20mm wrist pin housing bore that does not include a bronze bushing and req...

This design features a 20mm wrist pin housing bore that does not include a bronze bushing and requires custom pistons and DLC coated wrist pins (available from BC). The "MOAR" (Mother Of All Rods) Series connecting rod from Brian Crower is what a connecting rod would look like when taking input from the top engine builders and tuners in the industry. The MOAR Series is 15 grams heavier than the industry proven ProHD Series design. The I-Beam design allows added beam to cylinder wall clearance...

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 33-35 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.

BC8885 - Yamaha YXZ (16-up) Cam Bucket Followers

Shim in bucket design, requires BC spring/retainer kit BC0950B. Made from aerospace grade, 4140 c...

Shim in bucket design, requires BC spring/retainer kit BC0950B. 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 friction with cam lobes and cylinder head lifter bores for improved durability.

BC9050-2 - ARP Yamaha YXZ (16-up) Roll Cage Fastener Kit - 2 Seat

BC x ARP exclusive roll cage bolt kit for the Yamaha YXZ 2 seater. Features 12pt, polished stainl...

BC x ARP exclusive roll cage bolt kit for the Yamaha YXZ 2 seater. 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

BC9054 - ARP Yamaha YXZ Wheel Stud Kit (set/4)

Exclusive @arpbolts SxS wheel studs deliver the strength and performance required for extreme of...

Exclusive @arpbolts SxS wheel studs deliver the strength and performance required for extreme off-road use, whether it’s the dunes, trails, rocks or the race track. Made from heat-treated 8740 chromoly with cadmium plating for added corrosion resistance, ARP studs deliver 200,000psi tensile strength vs 150,000psi on the factory Grade 8 studs. ARP studs are designed with added shoulder length for proper wheel engagement, an oversize splined grip that keeps the stud secure on the hub and a pro...

BC9950 - Yamaha YXZ/998 NEW CNC Cylinder Head - Small Port 31mm/26mm 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. Check with BC for availability. 3) Send a used head in, receive that same head back + $150 for complete inspection prior to machine work. 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 ne...

BC9990 - SxS Valve Spring Compressor/Installation Tool

The BC valve spring compressor and installation tool for the Polaris RZR, Can-Am X3 and Yamaha YX...

The BC valve spring compressor and installation tool for the Polaris RZR, Can-Am X3 and Yamaha YXZ allows quick and easy assembly of a complete SxS cylinder head in minitues. Even works while the head is installed on the engine in the car using compressed air through the spark plug hole. Install valve springs, retainers, valves and keepers fast and efficiently. Includes the following: Base housing that threads into spark plug hole. Pivoting arm to install 4 valves per hole.    3 spring/retai...

CA6951 - Yamaha YXZ / Textron XX (16-up) Carrillo H-Beam Connecting Rods - Normally Aspirated

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...

CP1095 - Yamaha YXZ / Textron XX (16-up) CP Shelf Pistons w/All Hardware - 80mm x 9.5:1

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...

CP1097 - Yamaha YXZ / Textron XX (16-up) CP Shelf Pistons w/All Hardware - 80mm x 11.5:1

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...