FatTireConversions.com sells lots of Yamaha BW80 parts. From air filters to tires, we have what you need to keep your BW80 on the trail. This page shows the common parts that riders need, but we have much more available. We sell OEM Yamaha parts, as well as replacement parts made just for FatTireConversions.com. If we don't list what you need here, please check out our parts diagrams page. If you don't find what you need there, please contact us.

WHITE PLASTIC BODYWORK - $56.99/FENDER

FatTireConversions.com stocks DC Plastics replica plastic body parts for all years of the BW80. These HDPE thermoformed plastics are molded off of original Yamaha plastics and are high-quality reproductions. However, please be aware that they are not exactly like the original Yamaha parts. Some of these parts may require holes be drilled or included zip ties be used to fasten to your frame. Also, our aftermarket fenders have a satin finish, not the super glossy finish that the factory parts had. These plastics have been made by DC Plastics for years and work very well. We sell the front and rear fenders individually, so if you need both pieces, please add both to your shopping cart. CURRENTLY BOTH FENDERS ARE OUT OF STOCK.


BLACK PLASTIC BODYWORK SET - $129.99

FatTireConversions.com has custom made DC Plastics black BW80 replica plastic sets in stock! Don't paint your stock plastic and have it crack off when you can grab these fenders that are made from black HDPE plastic through and through. This kit comes with a front and rear fender and we only sell them as a pair (we do not offer these fenders separately). As with the white plastic we offer above, they are not exactly like the original Yamaha parts. Some of these parts may require holes be drilled or included zip ties be used to fasten to your frame. Also, our aftermarket fenders have a satin finish, not the super glossy finish that the factory parts had. CURRENTLY BLACK FENDERS ARE OUT OF STOCK.


SEAT COVERS - $49.99

FTC stocks red and blue seat covers for all years of the Yamaha BW80. These covers fit just like the stock ones and are made just for us by a well known seat cover manufacturer. These covers have the Yamaha insignia on both sides as shown in the picture. Please be aware that the blue covers that we stock match the darker blue of the two blue colors that Yamaha had for stock BW80 covers. If you have the lighter blue color, the blue cover we sell will not be a perfect match.


AIR FILTERS - $7.99

FTC stocks genuine Yamaha foam air filters for all years of the BW80. The Yamaha part number for this filter is 21W-14451-00-00 and it comes pre-oiled.


CRANKCASE / TRANSMISSION GASKET & SEAL KIT - $49.99

We offer Wiseco crankcase and transmission gasket and seal kits for all Yamaha BW80 models. This kit comes with everything shown to the left, which includes all the shaft seals, O-rings, and large clutch cover gasket required for a full disassembly and reassembly of the bottom end of the engine. The cylinder gaskets are not included in this kit (available separately below). In the case of a shortage, a similar Vertex brand kit will be substituted.

This part typically ship about 5 business days after the purchase is made.


TOP END GASKET SETS - $14.99

FTC stocks genuine Yamaha top-end engine gasket sets for all years of the Yamaha BW80. This kit comes with the cylinder head gasket (Yamaha part number 1W7-11181-00-00) and cylinder base gasket (Yamaha part number 4AW-11351-00-00).


EXTERNAL ENGINE SHAFT SEALS

FTC stocks all three external engine shaft seals for all years of the Yamaha BW80. We stock genuine Yamaha parts for these seals, which include the shifter shaft seal, part number 93102-12321-00, the kickstarter shaft seal, part number 93109-15001-00, and the output shaft seal (sprocket shaft seal), part number 93102-20143-00. We sell these parts individually, so please select what you need below.


EXHAUST GASKET & SEAL KIT - $21.99

FTC stocks genuine Yamaha exhaust seal and gasket sets for all years of the Yamaha BW80. This set of parts includes the header pipe gasket and the header to muffler seal. The two Yamaha part numbers included in this kit are 3RV-14623-00-00 (header to head gasket) and 4X4-14714-00-00 (muffler seal). AT THIS TIME, WE ARE OUT OF STOCK OF THIS KIT.


PISTON REPLACEMENT KITS - $74.99

We offer top-end rebuild kits for all years (1986-1990) of the Yamaha BW80. These high-quality Namura brand kits include a new piston, rings, wrist pin, wrist pin bearing, circlips, cylinder base gasket, and cylinder head gasket. These kits are available for standard bore and over-sized bore sizes, so please be sure to select the appropriate size kit below. These kits typically ship in about 5 business days.


FORK BOOTS

We've been having quite a hard time finding fork boots that are appropriate for the BW80. We've heard that boots for the early Honda XR100 fit these machines, but we are not able to get them from Honda any longer and we have not found any appropriately sized aftermarket boots. If you have come up with a solution and are willing to share the info with us, we will gladly make it worth your while.


FORK SEALS - $14.99/SET

FatTireConversions.com stocks Bike Master fork seals for all years of the BW80. We sell these seals as a set of two seals, so you can replace both at the same time.


STEERING STEM BEARINGS & SEALS - $44.99

FTC stocks quality All Balls Racing brand steering bearing and seal kits for all years of the BW80. These kits replace the loose ball bearings and seals with quality angled roller bearings and modern seals that provide smooth operation and far superior strength and reliability.


FUEL PETCOCKS - $45.99

FTC stocks genuine Yamaha fuel petcocks for all years of the Yamaha BW80. The Yamaha part number for this fuel valve is 36R-24500-01-00 and it comes with the mounting gasket installed. AT THIS TIME, WE ARE OUT OF STOCK OF THIS PART.


THROTTLE CABLES

Info will be posted soon.


FRONT BRAKE CABLES - $17.99

FTC stocks genuine Yamaha front brake cables for all years of the Yamaha BW80. The Yamaha part number for this cable assembly is 21W-26341-01-00 and it comes just as shown here.


REAR BRAKE ROD

Info will be posted soon.


CARBURETOR REBUILD KITS - $59.99

FTC stocks high-quality Japanese made Keyster carburetor rebuild kits for all years of the Yamaha BW80. THIS KIT ONLY WORKS WITH STOCK CARBURETORS and will not work with aftermarket carburetors. This kit comes with everything needed to completely rebuild your carb, including new jets, adjustment springs, needle valve, center needle, seals, and gaskets. Everything shown in the picture to the left is included in this kit.


CARBURETOR NEEDLE VALVES - $22.99

FTC stocks genuine Yamaha carburetor needle valves for all years of the Yamaha BW80. The part number for this needle, seat, and gasket set is 21W-14107-12-00.


BRAKE SHOES - $17.99/pair

FTC stocks quality EBC Carbon X brake shoe sets for all years of the Yamaha BW80. These kits include both shoes and are sold in sets for the front brake drum and rear brake drum. Please be sure to select the correct kit below.


SPARK PLUGS - $4.99

FTC stocks NGK spark plugs for all years of the BW80. The NGK number for this plug is BPR7HS.


IGNITION COILS - $94.99

FTC offers replacement ignition coils for all years of the BW80. The Yamaha part number for this coil is 43G-82310-40-00 and a slightly different part is shown to the left. This part typically ship about 5 business days after the purchase is made.


HANDLEBAR MOUNTED IGNITION SWITCH - $54.99

FTC stocks genuine Yamaha ignition switches for all years of the BW80. The Yamaha part number for this switch is 21W-83976-00-00 and it is the handlebar mounted switch assembly that mounts to the right handlebar. This part also holds the throttle cable and twist throttle tube.


CLUTCH DISKS & SPRINGS

FTC currently stock EBC CK series clutch friction disks (as shown to the left), but we are currently hunting for a source for the steel drive disks and springs. As these are unique to the BW80, and Yamaha is typically out of stock, we're seeking an alternate source for these parts. As soon as we have the steel drive disks and clutch springs available, we will offer them here. Luckily, the fiberous clutch disks take the brunt of the abuse on these little machines and we have you covered on those!


SHIFTER LEVERS

Info will be posted soon.


BRAKE PEDALS

Info will be posted soon.


FRONT BRAKE LEVERS - $12.99

FTC stocks quality Motion Pro stock replacement front brake levers for all years of the BW80. The Yamaha part number that this lever fits in place of is 23X-83922-00-00.


FOOT PEGS

Info will be posted soon.


KICKSTANDS

Info will be posted soon.


KICKSTARTER LEVERS - $48.99

FTC stocks genuine Yamaha kickstarter levers for all years of the Yamaha BW80. This lever comes with the lever itself, which has the rubber grip installed, as well as the factory pinch bolt. The two Yamaha part numbers included in this set of parts are 4BC-15620-00-00 and 97017-06025-00.


KICKSTARTER RETURN SPRINGS - $12.99

FTC stocks genuine Yamaha kickstarter return springs for all years of the Yamaha BW80. The Yamaha part number for this spring is 90508-26136-00 and it is a stock replacement part for all years of the BW80.



DRIVE CHAINS & SPROCKETS

FTC stocks replacement DID non O-ring chains (size 420, 104 link) and original Yamaha drive sprockets for BW80 models. The drive chain is a little bit longer than stock, so it will need to be shortened when installing (factory length is a 90 link chain) and the sprockets are original stock size.


DRIVE CHAIN GUARDS

Info will be posted soon.


SWING ARM BUSHINGS - $24.99/PAIR

FatTireConversions.com stocks swingarm pivot pushings for all 1986-1988 Yamaha BW80 models. These are genuine Yamaha parts and we sell them as a pair. The Yamaha part number for each of these bushings is 307-22123-00-00.


REAR CHAIN ADJUSTER PLATES

Info will be posted soon.


FRONT WHEEL BEARINGS & SEAL KIT - $17.99

FTC stocks Moose brand front wheel bearing and seal kits for all years of the BW80. This kit includes Moose brand replacement parts for Yamaha part numbers 93306-00105-00 (bearing), 93306-00108-00 (bearing), and 93106-18013-00 (oil seal). Similar parts are shown to the left (picture will be updated soon).


REAR WHEEL BEARINGS & SEAL KITS - $74.99

FTC stock rear wheel bearing and seal kits for all years of the Yamaha BW80. This kit comes with all three genuine Yamaha sealed bearings, oil seal, and O-ring that these little machines require for the rear axle. Below we have listed all the Yamaha part numbers that this kit includes.

DESCRIPTIONPART #
Bearing93306-30212-00
Bearing93306-20226-00
Bearing93306-00438-00
O-ring93210-41041-00
Shaft seal93106-30004-00


ALUMINUM REAR WHEEL KITS - $164.99

We now stock rear wheel replacement kits for all years of the Yamaha BW80. This kit comes with a modified ITP 8"x7" A-6 Pro model aluminum wheel (stock size is 7"x7" - our wheel is 1" taller) and machined aluminum wheel spacer to center the wheel on the bike. The wheel also has a relocated valve stem hole (original hole plugged and welded on both sides) to make it easy to get to the valve stem when mounted on the bike. This kit does require use of a different size tire than stock (18x8-8 tires are available below) and you have to order four Polaris brand studs from another dealer as we are not a Polaris dealer and we are unable to find aftermarket studs of the appropriate size. The Polaris part number for the three studs that you will require for this kit is 7519204. These are M8 x 48mm studs and have to be installed in place of the stock Yamaha wheel studs. This will require the appropriate press to pop out the old studs and press in the new ones. The original lug nuts will work with this wheel.


FRONT TIRES

The Yamaha BW80 came equipped with a 19x6-10 front tire, but we have verified that a 20x6-10 tire will also fit the front of these machines. Below we have provided a wide range of front tire options for the BW80.

AMS PACTRAX - $59.99

The AMS Pactrax tire has a rounded profile with a lot of tread in the center making for a smooth ride and easy turn-in. This is a 4 ply tire that is available in size 20x6-10. This tire typically ships in about 4 business days.


DURO LEOPARD - $71.99

The Duro Leopard is a 4 ply tire with lots of tread in the center and curved knob on the side that make for smooth turns even when the riding is sloppy. This tire is available as a size 19x6-10 (stock size). This tire typically ships in about 4 business days. CURRENTLY WE CANNOT GET THIS TIRE.


MAXXIS RAZR iMX - $114.99

The Maxxis Razr iMX provides tons of small knobs that work great for both loose and tightly packed trail conditions. This 4 ply tire is available as a size 20x6-10. This tire typically ships in about 4 business days.


ITP QUADCROSS MX2 - $104.99

The ITP Quadcross MX2 is a light-weight 2 ply tire that gives great center line tracking with it's solid line of center knobs, and good side bite with more open lug pattern on the side. This tire is available as a size 20x6-10. This tire typically ships in about 4 business days.


MAXXIS RAZR CROSS $99.99-$104.99

Very similar to the tire above, the Maxxis Razr Cross has a little more of an open tread pattern for loose terrain and has a 4 ply construction. This tire is available as a size 19x6-10 (stock size) and 20x6-10. AT THIS TIME, WE ARE OUT OF STOCK OF THIS PART.


MAXXIS RAZR MX - $104.99-$114.99

The Maxxis Razr MX may be a race tire, but on these little BW80, this 4 ply tire is a great option for hard-packed trails or grassy fields. This tire is available as a size 19x6-10 (stock size) and 20x6-10. This tire typically ships in about 4 business days.


ITP HOLESHOT MXR6 - 110.99

The ITP Holeshot MX6R is a light-weight 2 ply tire that works well in just about any riding condition, including mud, sand, and hardpack. This tire is available as a size 20x6-10. This tire typically ships in about 4 business days.


CST AMBUSH - $69.99

The CST Ambush has a very rounded profile with a tightly packed tread pattern on the side, making for a stable ride for hard-packed and grassy riding conditions. This 4 ply tire is available as a size 20x6-10. AT THIS TIME, WE ARE OUT OF STOCK OF THIS PART.


DURO SCORCHER - $78.99

If you're using your BW80 as a pit bike at the race track or drag strip, take a look at this tire. It's basically a street tire with a chuny look. This 4 ply tire is available as a size 19x6-10 (stock size). AT THIS TIME, WE ARE OUT OF STOCK OF THIS PART.


ITP SAND STAR - $80.99

If you're lucky enough to have sand to ride, this is the tire you want on the front of your BW80. The ITP Sand Star is a 2 ply tire with a dual fin design to keep the bike upright even when the sand is powder soft. This tire is available as a size 19x6-10 (stock size). This tire typically ships in about 4 business days.


REAR TIRES

Rear tires are no longer difficult to find for Yamaha BW80 models. The original rear tire is a size 18x8-7, and we now offer stock size tires and 1" narrower tires (18x7-7) for the original Yamaha 7" diameter wheel. Below is what we have available for options.

DURO DI-K785 - $139.99

The Duro DI-K785 is one of the only tires on the market that are available with the original BW80 rear tire dimensions of 18x8-7. This 2 ply tire has a nice round profile when inflated and makes turning easy while providing plenty of bite on the trail. as of 6/10/20, they are on backorder from the factory for about a month


CHEN SHIN C864 - $66.99

The Chen Shin C864 is a 2 ply trail tire that provides good grip with tight packed and loose trail conditions. This tire is available as a size 18x7-7, which is 1" narrower than the stock rear tire on the BW80. AT THIS TIME, WE ARE OUT OF STOCK OF THIS PART.


DURO TRASHER HF277 - $64.99/$68.99

The Duro Thrasher HF277 is a 2 ply tire that performs well on any trail conditions you throw at it. This tire is available as a size 18x7-7 (1" narrower than stock) and 19x8-7 (1" taller than stock). Both of these tires fit on the stock wheel, but if you could use a slightly taller ride height, the 19" tall version is a good option for the rear of the BW80. These tires typically ship in about 4 business days.


KENDA PATHFINDER K530 - $54.99

The Kenda Pathfinder is a light-weight 2 ply tire that works well in just about any riding condition, including mud, sand, and hardpack. This tire is available as a size 18x7-7, which is 1" narrower than the stock rear tire on the BW80. AT THIS TIME, WE ARE OUT OF STOCK OF THIS PART.


DURO DI2005 - $64.99

The Duro DI2005 is a 2 ply tire that works great on little bikes when the riding gets sloppy, but still provides a comfortable ride when the trail smooths out. This tire is available as a size 18x7-7, which is 1" narrower than the stock rear tire on the BW80. AT THIS TIME, WE ARE OUT OF STOCK OF THIS PART.


DURO HF247 - $66.99

The Duro HF247 is a 2 ply tire for those who are using their bikes on pavement and hardpacked dirt. The smooth surface knobs provide a comfy ride and is a great option if you're using your BW80 for a racetrack pit bike. This tire is available as a size 18x7-7, which is 1" narrower than the stock rear tire on the BW80. AT THIS TIME, WE ARE OUT OF STOCK OF THIS PART.