Shimano RX100 (BB-A550) NOS/NIB Bottom Bracket - English 113 mm Classic 1990s

✓ Original part - produced in the 1990s✓ New old stock & still in the original packaging!✓ Worldwide shipping Shimano RX100 bottom bracket, hailing from Japan and in production during the 1990s (yet still new after all this time!). Made from steel and weighing in at 323 grams. A fine choice for keeping your classic bike authentic, but also great for any other compatible bike.OVERVIEWBearing / Race Condition - New Old Stock - In Original Packaging*Model ID - BB-A550Production Era - 1990sCountry - JapaneseMaterial - SteelWeight - 323 gStock Code - D-BB158C*NOS items may have marks from storage over the years, and as we often have multiples they can vary from piece to piece, but they will always be genuinely new old stock.TECHNICAL INFOThread Type - English Thread (British/ISO 1.37" x 24 TPI)Axle Length - 113 mm Axle Type - Square TaperSHIPPING, TAXES & RETURNS We've been safely sending orders around the world since 2010. Orders are carefully packed, sent with tracking & insurance, and normally collected around midday on Tuesdays and Fridays. Larger items may occasionally require an extra day or two to prepare. EU orders under €150 (excluding shipping & VAT) - all import fees are collected by eBay, so there's nothing further to pay on delivery. All other international orders - import fees may be payable before delivery. eBay will advise before payment whether there will be anything further to pay on delivery.HELP SECTION Thread Type - this must match the bottom bracket thread on your frame. The 3 common thread types on classic and vintage bikes are English (also known as British or ISO), Italian & French, and are usually (not always!) found on frames built in their respective countries. If you're replacing a bottom bracket the cups should have the thread type stamped on one of them, if not there are a couple of things to look at; bottom bracket shell width (English & French = 68 mm, Italian = 70 mm) & drive side cup thread direction (English = left, Italian & French = right). The only curveball to watch out for here, although pretty uncommon, are Swiss threads (also found on some French frames, Motobecanes being one) which will have the same shell width & thread direction as an English thread frame but the actual thread pitch will be different. If none of the above matches what you have, there are a few lesser known varieties that will require some further research.Axle Length - your crankset dictates the axle length you need and the recommendation should be used to avoid issues with chainline. If you're replacing a bottom bracket that works perfectly then this can be matched, otherwise you'll need to check the manufacturers spec, a good resource for older bikes is Velobase.Axle Type - you can tell which type of axle you need by looking at the shape of the bottom bracket hole in your crankset. For square tapers, the ISO introduced a standard for European makers in the early 90s, JIS then did the same in Asia. Before then it was not so simple, and although there is a degree of interchangeability, the best way to make sure you have the right axle is to stick to the same brand from the same era, ideally the proprietary model.

✓ Original part - produced in the 1990s
✓ New old stock & still in the original packaging!
✓ Worldwide shipping

Shimano RX100 bottom bracket, hailing from Japan and in production during the 1990s (yet still new after all this time!). Made from steel and weighing in at 323 grams. A fine choice for keeping your classic bike authentic, but also great for any other compatible bike.

OVERVIEW

Bearing / Race Condition - New Old Stock - In Original Packaging*
Model ID - BB-A550
Production Era - 1990s
Country - Japanese
Material - Steel
Weight - 323 g
Stock Code - D-BB158C

*NOS items may have marks from storage over the years, and as we often have multiples they can vary from piece to piece, but they will always be genuinely new old stock.

TECHNICAL INFO

Thread Type - English Thread (British/ISO 1.37" x 24 TPI)
Axle Length - 113 mm
Axle Type - Square Taper

SHIPPING, TAXES & RETURNS

We've been safely sending orders around the world since 2010. Orders are carefully packed, sent with tracking & insurance, and normally collected around midday on Tuesdays and Fridays. Larger items may occasionally require an extra day or two to prepare.

EU orders under €150 (excluding shipping & VAT) - all import fees are collected by eBay, so there's nothing further to pay on delivery.

All other international orders - import fees may be payable before delivery.

eBay will advise before payment whether there will be anything further to pay on delivery.

HELP SECTION

Thread Type - this must match the bottom bracket thread on your frame. The 3 common thread types on classic and vintage bikes are English (also known as British or ISO), Italian & French, and are usually (not always!) found on frames built in their respective countries. If you're replacing a bottom bracket the cups should have the thread type stamped on one of them, if not there are a couple of things to look at; bottom bracket shell width (English & French = 68 mm, Italian = 70 mm) & drive side cup thread direction (English = left, Italian & French = right). The only curveball to watch out for here, although pretty uncommon, are Swiss threads (also found on some French frames, Motobecanes being one) which will have the same shell width & thread direction as an English thread frame but the actual thread pitch will be different. If none of the above matches what you have, there are a few lesser known varieties that will require some further research.

Axle Length - your crankset dictates the axle length you need and the recommendation should be used to avoid issues with chainline. If you're replacing a bottom bracket that works perfectly then this can be matched, otherwise you'll need to check the manufacturers spec, a good resource for older bikes is Velobase.

Axle Type - you can tell which type of axle you need by looking at the shape of the bottom bracket hole in your crankset. For square tapers, the ISO introduced a standard for European makers in the early 90s, JIS then did the same in Asia. Before then it was not so simple, and although there is a degree of interchangeability, the best way to make sure you have the right axle is to stick to the same brand from the same era, ideally the proprietary model.

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