Yamaha BYZ 401 1982

Yamaha BYZ BMX bikes was made by Motobecane in France in the early 80´s. This is the second best model, called ¨BYZ 401¨. It’s not 100% correct built up compared to the bike from -82´, but it’s very close to the original specifications.

I found the frame in France. The paint was in bad condition so it was stripped and then powder coated by Barspin-Danne. I took the Sakae SR crankset from my old Marin mountainbike from the 80´s and it’s been refurbished, polished and painted in translucent red. The A’me Cam grips are genuine 80´s and not one of the new reproductions. The number plate is a copy of Haro Series One plate. I couldn’t find the SR pedals in 9/16¨ size, so I changed the 1/2¨ spindles to a pair of 9/16¨ from a new set of Shadow Conspiracy Ravager pedals. The Weinmann MX rear brake have been refurbished and painted, but I was able to keep the original decals. The decals for the frame and seat are made by me.

Some of the NOS (new old stock) genuine Yamaha parts; TMX fork, Yamaha handlebar, Yamaha padset, Weinmann rims, San Marco seat and SR Laprade seat post comes from Barry in Malmö/Sweden who bought the remains from the Yamaha dealer in Sweden from early 80´s for a couple of years ago. The parts are very hard to find, so I’m very grateful to Barry for selling the parts to me!

This is one of my favorites, so I hope you will like it as much as I do! ;-)

FRAME Yamaha BYZ 401, white (refurbished)
FORK TMX 1” threaded, chrome (NOS)
STEM SR MX-420, silver/red (refurbished)
HANDLEBAR Yamaha V-bar (from BYZ 201), red lacquered (NOS)
HEADSET YST 1”, chrome/red lacquered (NOS)
GRIPS A’ME Cam (genuine early 80’s), red (NOS)
CRANKS Sakae SR 175mm 3-piece aluminum, red lacquered (refurbished)
BB Conversion US BB 3-delat, silver (NOS)
CHAINRING SR 44T, red lacquered (refurbished)
CHAINRING BOLTS Sugino (stamped), chrome (NOS)
PEDALS SR MP-464 Custom M, 9/16”, red (NOS)
CHAIN Sedis 1/8”, black (NOS)
SEAT San Marco Concor Supercorsa, red. Yamaha-decals (NOS)
SEAT POST SR Laprade aluminum 7/8”, red/silver (NOS)
SEAT POST CLAMP SR Japan, red lacquered (refurbished)
BRAKE Weinmann MX, red lacquered (refurbished/NOS parts)
BRAKEPADS Weinmann, black (NOS)
BRAKE LEVER Chang Star – Tech-2 copy, red (NOS)
BRAKE CABLE Centurion, red (NOS)
RIMS Weinmann 36H, 20 x 1.75”, gold (NOS)
FRONT HUB Shimano DX 36H, red (NOS)
REAR HUB Shimano DX 36H cassette 16T, red (NOS)
SPOKES Chrome spokes 14G 187mm. Chrome brass nipples (NOS)
FREEWHEEL Shimano 16T cog (NOS)
FRONT TIRE Kenda 20 x 2.125”, red skinwall (NOS)
REAR TIRE Panaracer Knarler Knobby 20 x 1.75” , red skinwall (used)
TUBES Unknown
PADSET Yamaha BYZ, vinyl (NOS) - Stem-pad is missing
NUMBER PLATE Haro “Series One” copy, white (NOS)
DECALS Yamaha BYZ 401 (made by me)







  • #1 written by James
    about 2 years ago

    That’s amazing, I’ve just brought one of these, we’ll 2 actually but I’ve just sold one and plan to fix the other up!

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