BMX Parts

Dirt Modified

Mid School and Old School BMX parts reference

This page will have mostly Mid School BMX parts and Frames with a hand full of Old School Bicycle Motocross items. This page will be for BMX racing parts from the 1970’s through to the 90’s and a few newer school items. You know, the bikes and parts that would have been at the BMX Track on any given Sunday for races. Some more main stream than others, and some still being produced. Many top brands like Crupi, Dia-Compe, Redline, GT and many more.

If you are looking for the vintage Freestyle BMX page click here. Sometimes a part is technically MTB or BMX so don’t forget to stop by the Mountain Bike Parts page as well.

Crupi BMX started out in 1982 with small parts such as pedals. They were very high quality Old School BMX parts that helped change the sport of Bicycle Motocross. The pedals pictured are Crupi Pro Square and are made in the USA. Would be considered mid school BMX as they are late 90’s or Early 2000’s and most likely 4th generation. They have CNC Machined 4130 Chromoly Steel Spindles in 9/16″ thread designed for most 3 piece BMX cranks such as Redline Flight. Each pedal requires (1) 1607-2RS bearing and (1) R6-2RS bearing. Pedal bodies are CNC Machined from Billet aluminum, and pedal cages are stamped out of 6061 aluminum.

White Industries Eno Freewheel 18 tooth – 3/32 chain or 1/8 chain – Rear Cog  (check price). If you are tired of having a disposable freewheel then Eno is the ticket. Normal freewheels have looseball bearing internals, whereas the White Industries sports a sealed cartridge bearing instead. This type of bearing seals out contaminates such as water and dirt, which are the main culprits in destroying your drive train. A typical BMX freewheel cog such as Shimano or Suntour have 30 points of engagement, the Eno has up to 72 point engagement. That equates to more of an instant engagement and less lag on getting power to the rear wheel. They also machine the driver and outer casing on the Eno giving the user less tight and loose spots in the chain. Tired of having chain tension issues with your old school BMX,  then this type cog can help. It’s totally serviceable and lasts a long time, get one! Available in 16 tooth all the way up to 23 tooth, and Eno Dos in 16/18t, 17/19t or 20/22t

Von Giese Seat Guts for old school BMX seats such as Kashimax. This VG part was made in the early to mid 90’s and could be considered Mid School BMX. Von Giese & Son Machining are located in Morgan Hill and started making CNC aluminum BMX parts in the early 1990’s or so, and halted production in the late 90’s. They took a long break from making BMX items but made a short return to the BMX scene in 2011-2012. Most of the new items that they made were the same basic designs as the 90’s parts. I do not believe that VG is making BMX parts as of 2019.

These are Vintage Technique Crankarms 153mm Square Taper Mid School BMX Cranks made in the mid to late 90’s. Technique has been around since 1995 and produced Frames, BMX Hubs, Cranks, BMX Disc Brakes, Pedal parts and Sprockets back in the day. As of 2019 they are now sold under what seems to be Bassett Racing. Super nice boutique BMX parts that are far from run of the mill. Very unique light weight parts designed mostly for race bikes.

Mongoose Live Wire Mid School BMX Seat. This saddle has a full Kevlar Cover and is very durable with no slip. It’s made by VELO, part number VL-229, and branded Mongoose. Would have been a stock part from a 1995 Mongoose Solution Pro. It seems like the most popular Kevlar seat in the mid 90’s was Speed Defies Gravity ( SDG ). My guess would be that Mongoose copied the SDG style saddle and added the Livewire seat rails to be unique. Old school BMX seat guts such as Kashimax KSM will fit the standard 7mm seat rails.

Tioga Beartrap Old School BMX Headset made in Japan. The cups on a BMX specific headset are 32.5 mm or 32.7mm depending on the brand. Will fit frames such as the Balance Bmx Killer B frameset. Tioga BMX does still make the Bear Trap Headset but it is no longer made in Japan. Still a very nice headset and looks the part without being very expensive. Cups are Chrome plated steel with retainer bearings. This headset is well known for keeping adjustment as the washer and adjuster cup have teeth. When tightened properly this headset does not come loose much if any.

1983 Sunshine Flipflop Hubset 36 hole anodized Red. These old school BMX hubs are New Old Stock ( NOS ) in the original box. Very high quality bike parts that were made in Japan and use sealed cartridge bearings. The hub shells are both stamped Sunshine Gyromaster 83 Japan. From the research I can gather it appears that the Gyromaster hub started out as a road bike hub in the mid 70’s and was looseball bearing. In the early 80’s it switched to a 110mm spacing BMX hub and sported sealed bearings. Sunshine Gyromaster bearing size is 6000 for the flip-flop version front and rear hubs as pictured. I do not know what size bearings will fit other non flipflop sunshine hubs. Very under estimated hub that spins awesome when new!

Bullseye BMX Hub 28 hole Rear Freewheel 110mm Spacing. Can be MTB or Road with Longer Axle (check out this sign!) I’m not sure the date of this hub but would guess it to be somewhere from the mid 80’s to early 90’s. Roger Durham founded Bullseye Cycle Company in 1973. He started out out with alloy derailleur pulleys (jockey wheels) the first year or so. Then it was on to Hubs, Cranks, Bottom Brackets, Pedals and a few other parts. Bulleye was and is a true Old School BMX company. They made products in the USA up until 1995 until they decided to take a break, a long break. In about 2008 they started back up making parts again. I’m not sure if they are still made in the USA.

Full Speed Ahead FSA BB-522 BMX Bottom Bracket 22mm 48t ( 261620 B ). This BB set has 22mm Sealed Cartridge Bearings with anodized Silver American Cups. The 48 spline 22mm Spindle is Chromoly. This set will fit FSA X-Drive or Wild Child tubular steel crankarms. This spindle will not fit Profile SS oversize crank arms, trust me it will not work. These are late 90’s or early 2000’s Mid School BMX parts that are fairly uncommon. Seems as if FSA made a boat load of Crankarms but not enough BB’s to fit them all. The industry standard for 48 spline is 19mm with the heavy duty cranks coming in at this larger size. The replacement bearings are a fairly unusual size for the bicycling world.

Odyssey Bmx is truely an Old School BMX company that has been around since 1985, with their first product being the Gyro Brake Cable Detangler. The 1st Generation Pitbull Brake as pictured here came out about 1987-88 and had way more stopping power than a standard caliper brake. They came standard in white, black, silver with baby blue being fairly uncommon. I have seen a couple in red over the years and then there was a plastic version as well, which were quickly phased out. Somewhere in the 1990’s the 2nd generation Pitbull II came out, which I will guess mid-late 90’s. It was a totally new design with cantilever style threadless post brake pads, but still sported a center brake cam. It was and is a nice brake, although it seems as if most of the old school crowd would pick a 1st generation brake over the 2nd gen any day of the week. Lots of “improvements on the 2nd gen brake were not seen as improvements by many. The Odyssey Pitbull center pull brake is epic without a doubt.

Suzue 28 hole Hubset. These are cartridge bearing hubs and extremely rare aluminum axle version. They are not lowey axles, they look stock as far as I can tell. The suzue stickers are really cool in the red logo, never seen this sticker before. These hubs are designed for a Mini or Junior BMX Racing bike and have a weight limit of 90 pounds or so. The Suzue Date Code Chart pegs these hubs as January 1988 as they are stamped “8A” on the center of each hubshell. That date puts them in the Old School BMX dept for sure. Very cool 28h hubs that look New Old Stock.

Here is a super rad set of Suzue Hi-Flange hubs in 36 hole. I have to say that these hubs are some of my favorites. They run (2) cartridge bearings in each hub then have an additional rubber seal over the bearing. Super nice design and very strong hubs that spin great on the stock Japanese bearings. The hub date code reads “5K” on both hubs, which equates to November 1985. That definitely puts them in the Old School BMX category, but these same type hubs also came stock on Mountain Bikes such as the 1985 Diamondback Apex. This set has the sticker that reads Suzue Sealed Tech, which in most cases specifies looseball bearing with rubber seal. Suzue Sealed Mechanism was their cartridge bearing version like these hubs pictured. I can’t say for certain but it seems as if they stickered some hubs improperly over the years, with this set being an example of such. The swivel washer nuts are a great design and work as good as they look. Lots to like about these hubs including a down to earth price. Suzue gave the consumer a no frills hubset that can out perform hubs that cost double or even triple the price.

GT Bicycles brand BMX Racing Stem. This type vintage BMX gooseneck was stock on the GT Interceptor and Mach One starting in 1989 and ending the very next year in 1990. It’s a standard 21mm Quill Stem with solid wedge bolt. GT made a freestyle stem almost identical to this with a hollow wedge bolt for potts mod and a drilled stem cap with cable stop adjuster. Click to see my GT Freestyle Stem in original white finish. This stem came in Light Blue, Black, and White. Have only seen Black for race stems though, and have never personally witnessed the light blue. I would consider this Mid School BMX as it doesn’t have the same flavor as old school stuff in my opinion. The old school Billet Aluminum look was gone, which for me was kind of a deal breaker with this design. I honestly don’t think that this design was very popular, at least not with the race crowd it would seem. Possibly ahead of it’s time?? Just maybe.

1987 Suntour BMX Freewheel 16 tooth Cog. This Old School BMX part was made in Japan by Maeda Iron Works Company. This Suntour Freewheel date code is DG which equates to July 1987. The first letter ( starting with A=1984 ) is the year and 2nd letter is the month. In 1988 Suntour was purchased by Sakae Ringyo ( SR ). The name was changed to SR-Suntour after the buy out. The SR-Suntour company closed it’s USA doors in 1995. Original Suntour components didn’t make it and production halted. Tooling to make the original Suntour products was sold for scrap. I vividly remember when Suntour closed up shop in the mid 90’s. The consensus from most in the bicycle industry ( reps inside/outside ) was that Shimano had a superior product. From a mechanics stand point I totally agree with the reps, Suntour had major issues delivering on a MTB drivetrain that would shift well. Such a bummer to lose Suntour.

AC BMX Crankset 180mm Tubular Chromoly crank arms. This setup including AC sprocket was stock on a 2004 SE Racing PK Ripper. It uses a 48 spline spindle in chromoly steel version. This Mid School BMX crank is very similar to Profile Cranks. Adventure Components made both BMX and Mountain Bike parts. They produced cranks, hubs, chainrings, seatposts, stems, pedals, brakes, freewheels, chain tensioners, bottom brackets, seat post clamps and a few other things. The AC BMX pedals and brakes that they made must have been made in limit quantities as they don’t surface very often. I’m not clear on when they started up but would guess very late 80’s or early 90’s. I know they were still making parts well into the 2000’s but seems as if they are no longer around. 

Here is an aluminum Stiffys Stem in 1 1/8″ threadless, designed for a Junior or Expert possibly EXP cruiser. This gooseneck has a weight limit of around 100 pounds or so. Stiffys BMX Products was a small company out of Newberg Oregon. They were in business from the late 90’s up until the mid 2000’s or so. They sold Mid School BMX goodies including Frames, Forks, Stems, Handlebars and soft goods like Baseball hats and beanies. Most of the products they designed were built out of Aluminum ( 7005 series frames ). This was a company that catered to the smaller BMX racer that wanted an ultralite weight race bike with awesome handling. The frames had a very small rear triangle for easier manuals and better gate starts, plus oval top and down tubes with diamond shape chain stays. Those features made for a very stiff frame, coupled with the super light Stiffys aluminum fork gave any rider the winning edge.

2001 Redline Proline Team BMX Cruiser. This 24″ Bike is far from stock other than a few Redline Flight parts. Most of the parts are era correct including the WTB Saddle, Powerlite Handlebar, and Alex DM24 Rims. I opted to keep the Redline Big Block 180mm one piece crank as it’s super stiff. The Redline sprocket, spider, and Flight pedals are stock as well. Cool race bike with a fairly relaxed geometry that’s super fun to cruise the streets.

Odyssey Toro Pro 1″ Threaded Headset Anodized Purple. This all aluminum Mid School BMX Headset is new old stock ( NOS ) from the early to mid 1990’s. The needle bearings are very smooth and the rubber o-rings keep the dirt and crud out of your bearings. The top nut has a locking mechanism that keeps the bearings from coming loose, similar functionality as a Tange LP-440. Super light weight headset suitable for BMX racing and street riding. Not designed for dirt jumping or extreme riding as it’s just not strong enough.

Here is a Schwinn Stamped Bottom Bracket 28t. It came off a 1983 Sidewinder or a 1983 Schwinn Sierra 10 Mountain Bike. I had both of those bikes and I can’t remember which bike this B.B. came from as stock equipment. Both were spec’d with a 28 thread one piece BMX crank. This set looks complete minus the thick washer that goes against the sprocket, which is really interchangeable with most BB’s. It even looks to have the original Looseball bearing retainers # 6178A stamped Schwinn. I have seen it mentioned that this 28t Bottom Bracket fits some old school Redline Flight 3-piece crank spindles. I can’t positively verify that information, although if Redline uses a 28t then it probably should work without modifications.

Do you want to know where to find Old School BMX ?

Many times I get asked “were do you find all of these old school BMX bikes”. Sometimes it’s a person from an online forum but more often this question comes from someone local who hasn’t been into ABA Racing or Freestyle for decades. Most times I tell them that an easy search such as “where to buy old school bmx bikes” or “old school bmx for sale near me” will give them some ideas on where to find vintage bicycles. Finding old bikes is a treasure hunt and can be fun, but can also be very time consuming and costly. Old barn finds are still out there, but they are getting fewer and farther between since the early 2000’s when lots of people jumped on the collecting bandwagon. Old school bike shops are a good place to look although lots of them have been “cleaned out” years ago of their old stash of parts and bikes. As with most things nowaday people turn to internet shopping to find what they need. Locating vintage BMX is no different, with Ebay being one of the most popular ways of finding old bikes. Craigslist is another way of finding hidden gems on a more local search, with some sellers even willing to ship. Facebook has many avenues for discovering gold. Good luck on your search for old bicycles and parts!