Honda CB350F/CB400F Hybrid "Yonfour" Style Restored Motorcycle, Wotani Ignition
各所オーバーホール済み！ウオタニ装備！HONDA ヨンフォア仕様CB350F CB400Fバケヨン仕様 中型免許で乗れるヨンフォア 各所レストア済み
This is a restored Honda four-cylinder built in classic "Yonfour" style, combining a CB350F frame (purchased with correct stamping and MDF frame certificate plate) with a CB400F engine bottom end paired to a CB350F top end, giving a 347cc displacement so it can be ridden on a mid-size Japanese motorcycle license rather than requiring a large-bike license. The builder holds a Class 2 mechanic license and has completed several similar builds sold via Yahoo Auctions. Extensive new/overhauled parts are listed: Keister carburetor overhaul kit and new insulators, new AS Wotani ignition, new front brake caliper seals, new brake hose and master cylinder, new steering stem bearings, repainted frame, reproduction fuel tank/cap/petcock and side covers, reproduction CM400-style meter, new oil and filter, rewired harness with soldered bullet connectors, new horn, headlight, headlight relay, key cylinder, oil temperature gauge, battery, handlebar switches, cables, grips, fuse box, starter relay, turn signal relay, a large Z-style tail light, a slimmed (ankonuki) seat, new chain, and a new rear TT100 tire. The muffler is of unknown brand. Documentation included: customs paperwork, bill of sale, and a local title. Extensive build videos on YouTube are referenced as the primary source of detail; the seller states buyers should review them before bidding.
Seller states the bike has scratches and dirt (傷や汚れあり) and is sold as a current-condition restoration-base/junk-treatment vehicle with no warranty or guarantee it will pass inspection. Specific noted flaws include painted-over rust at the front fork stem area and a used front fender with some cut/modified section, though the seller says this does not affect rideability.
Shipping: Documents will be sent cash-on-delivery via Yamato after sale; the vehicle itself is not shipped by the seller and must be arranged by the buyer through their own vehicle transport company. The seller only offers door-to-door pickup from Kita-ku, Tabata, Tokyo, and cannot assist with loading due to a stated health condition. No shipping cost for the vehicle itself is quoted by the seller.
Ships from Tokyo, Japan, to our Osaka warehouse and on to Pomona.
Starting Price
No bids
$6,123
￥949,000
The bid is in yen and the dollar figure converts at today’s rate. This is the item alone; the all-in landed price is in the quote below.
Buy It Now
$7,742
￥1,200,000
For the item. Skips the auction, this price is fixed.
Sep 26, 2026, 6:59 AM PDT
| Item price, at the starting price | $6,123¥949,000 |
| Service fee, commission & handling | $1,613¥250,000 |
| U.S. import duty | $153¥23,725 |
| Shipping to our Osaka warehouse | $290¥45,000 |
| Ocean Freight to California | $750 |
All-in pickup (Pomona, CA), at the starting price
U.S. domestic shipping not included
$8,929
The seller sets shipping to Osaka after the sale, so that part of the quote is confirmed before you commit.
The total above is what the vehicle costs you landed. It is collected in two charges, usually four to eight weeks apart.
Both figures move with the final winning bid. A deposit of 20% of your max bid is due before we bid.