BSA 40-0929 Cylinder Head Valves Piston C/w TR25W

( Brand: Bsa ), ( Manufacturer Part Number: 40-0929 ), ( Type: Cylinder Head )

Review BSA Cylinder Head C/w Valves Rebuilt New Piston Also Triumph fits B25

The BSA 40-0929 B25 cylinder head with valves and piston is a high-quality replacement component designed specifically for Triumph TR25 and TR25W motorcycles. This cylinder head is meticulously crafted to ensure a perfect fit and optimal performance for your classic motorcycle.

The BSA cylinder head comes complete with valves and a piston, making it a comprehensive solution for those in need of a cylinder head overhaul. The valves are precision-engineered to provide efficient air and fuel intake, while the piston is designed to deliver optimal power transfer from the combustion chamber to the crankshaft.

The cylinder head itself is made from high-grade aluminum alloy, ensuring both lightweight and durability. The cylinder head features a standard B25 engine specification, with four valves arranged in an overhead valve configuration. Each valve is operated by a single camshaft located at the rear of the cylinder head.

The cylinder head's combustion chamber is designed to accommodate the stock TR25 and TR25W engine sizes. The head also includes new gaskets, ensuring a leak-free seal between the head and the engine block. The cylinder head's surface finish is smooth and even, allowing for easy installation and excellent heat dissipation.

The piston included in this kit is designed to fit perfectly in the cylinder bore of the BSA cylinder head. It is made from a strong, forged material to ensure durability and longevity, while its shape and size are optimized for maximum power output and efficient combustion.

The BSA 40-0929 B25 cylinder head with valves and piston is an excellent choice for enthusiasts looking to restore their classic Triumph TR25 or TR25W motorcycle to its former glory. With its high-quality construction, precise fit, and comprehensive design, this cylinder head kit is sure to provide reliable and long-lasting performance for years to come.

Buying the BSA 40-0929 B25 cylinder head with valves and piston for a Triumph TR25 or TR25W motorcycle can be a viable option for those in need of a replacement part. Here are some potential pros and cons to consider before making a purchase.

1. OEM Part: This cylinder head is an original equipment manufacturer (OEM) part, which means it is designed and manufactured by the same company that produced the original part on your motorcycle. Using an OEM part can ensure a proper fit and function, and may be preferred by some motorcycle enthusiasts.

2. Complete Kit: The cylinder head comes with valves and piston, which can save buyers the time and hassle of having to purchase these items separately.

3. Reliable Brand: BSA is a well-known brand in the motorcycle industry, with a reputation for producing high-quality parts.

1. Cost: OEM parts can be more expensive than aftermarket parts, and the BSA cylinder head with valves and piston is no exception. Buyers should be prepared to pay a higher price for this part.

2. Availability: Depending on the location and availability, it may take some time to source and receive this part. Buyers may want to consider alternative sources or options if they need the part urgently.

3. Installation: Installing a cylinder head can be a complex and time-consuming process, and may require specialized tools and knowledge. It is recommended that this task is carried out by a professional mechanic or experienced hobbyist.

The decision to buy the BSA 40-0929 B25 cylinder head with valves and piston for a Triumph TR25 or TR25W motorcycle ultimately depends on the buyer's priorities and circumstances. Those who value the peace of mind that comes with using OEM parts and are willing to pay a higher price may find this to be a worthwhile investment. However, for those on a budget or who are in a time crunch, aftermarket options may be more appealing. Ultimately, it is important to weigh the pros and cons carefully and consider all available options before making a purchase.

Before making a final decision, it is recommended that buyers do their due diligence and research available options thoroughly. They can compare prices and features of different cylinder head options, including OEM and aftermarket parts, and consider factors such as availability, installation complexity, and cost. Consulting with a professional mechanic or experienced hobbyist can also provide valuable insights and guidance. Ultimately, the best option will depend on the individual's specific needs and circumstances.

Details:

SPRING CLEANING, BSA B25 / TRIUMPH TR25W CYLINDER HEAD FULLY REBUILT NEW GUIDES ,STAINLESS VALVES, LIGHTY PORTED, BORED/HONED AND PISTON, THE LABOR IS MORE THAN ASKING PRICE FITS 1967-70 1968-70.

part #: 400929 prices

• $40.00-$130.00

specifications cylindermotorcycleiz:

• for models: B25
• for makes: Triumph
• brand: Bsa
• mpn: 40-0929
• type: Cylinder Head

payments cylindermotorcycleiz:

• other
• cash
• credit card: Mastercard
• wallet: Paypal

shipping cylindermotorcycleiz:

• transit: 3-8 Days
• class: Expedited, Economy
• cost: $63.20
• carrier: USPS, FedEx
• service: USPS Priority Mail, FedEx Ground Economy
• type: Calculated

general cylindermotorcycleiz:

• Motorcycle Scooter Parts Accessories > Engines Engine Parts > Cylinder Heads
• condition: Used

offer cylindermotorcycleiz:

• sold: 0
• options: Ship-to-home
• started: August 5, 2025
• availability: In Stock
• quantity: 1

returns cylindermotorcycleiz:

• policy: Returns Accepted
• paid by: Buyer
• time: 30 Days

seller cylindermotorcycleiz:

• city: Anaheim, California
• # reviews: 3193
• rating: 100.0%

Bsa 40-0929 Is Similar To:

• 40-930 Triumph Bsa 1968 1969 (24.5% similar) The combustion chamber is not cracked. This unit was removed from a 1970 triumph trophy free shipping in the continental USA. The valves came out very easily, they were not frozen or galled. See pictures of valves. I see no damage or unusual wear. Offered is a used triumph-Bsa cylinder head, pn, ...(July 4th, 2017)
• 40-950 Triumph Bsa 1968 1969 (26.4% similar) 35MM at the top. I will always combine shipping for winners of multiple offers. Offered is a used triumph-Bsa cylinder, part, on triumph trophy 250 TR25W, and Bsa B25 star fire model motorcycles. All of the fine are straight, none broken. For info, it mikes at 67. I do not deliver to PO. Free ...(July 8th, 2017)
• 40-961 Triumph Bsa Complete 1968-70 (23% similar) I will always combine shipping for winners of multiple offers. I have completely disassembled and inspected this unit for your inspection. Offered is a good used triumph-Bsa rocker box valve cover, part, on triumph trophy 250 TR25W, and Bsa B25 B44 model motorcycles. I see no damage or unusual wear...(July 4th, 2017)
• 41-0785 Bsa B44 Star Shooting Head Shape Nice 441 Victor Cylinder Gg8 (20.4% similar) Nice used cylinder head. Most items are shipped via USPS priority mail. Unusually heavy or bulky items are shipped via ups or fed ex ground services. Call or through messages. No cracks around studs. Will gladly combine shipping. No broken fins threads in good condition. Feel free to ask questions...(September 28th, 2015)
• 65-1403 Bsa Gold Star Goldstar Series Head Cylinder Bolt (25.4% similar) Shipping calculations are for the us and Canada. Shipping charges are an estimate based on weight and size using Canada post. Good used condition. Please inquire about shipping if you live outside of those areas...(March 5th, 2019)
• 65-1501 Bsa Bb Gs Gold Star Cylinder Head Clubman Alloy Clipper (45.4% similar) Check my other listings for more gold star parts, along with tons of vintage motorcycle goodies. Bsa part number, casting cast-in on the drive side of inlet valve housing, am in same place outside exhaust recess. This original BB34 head is in great shape, alloy casting near-perfect condition with no...(December 8th, 2018)
• 65-1750 Bsa Bb Gs Gold Star Cylinder Head Scrambler Trials Alloy (40.8% similar) Combustion chamber clean, smooth and in great shape, no shrapnel damage or casting flaws, 85MM diameter. Will combine multiple items for lowest shipping cost. Offered here with reasonable opening bid no reserve. Only flaws I can spot: some wear on the head steady lug, a weld seam small bottom fin at...(February 2nd, 2019)
• 65-640 Bsa Gold Star Big Fin Clubman Cylinder Head Inlet (34.3% similar) Check my other listings for more gold star parts, along with tons of vintage motorcycle goodies. Running from the outer edge of valve seats, across combustion chamber to cylinder bolt threaded inserts, and this was indeed case when head came me 10 years ago. This beautiful big fin club man head is ...(January 15th, 2019)
• 65-664 Bsa Dbd Gs Gold Star Big Fin Cylinder Head Catalina (38.2% similar) Inlet port, carb mounts on 2 centers, stamping top left of flange appears to be cu 64 and 10 30EK the right, underneath 665 is stamped along with date stamp track page views free counter. Domestic us. Will combine multiple items for lowest shipping cost. This beautiful head is in near-perfect ...(December 8th, 2018)
• Super Bsa A10 Rgs Style 67-1106 Intake D241 Rocket Cylinder Late Twin Head (27.6% similar) No other visible damage. Do not miss out only one I have and have seen in a while. Most items are shipped via USPS priority mail. Has on fin with a corner broken of. Call or through messages. Feel free to ask questions. Will gladly combine shipping. Had a very recent valve job. For domestic items ...(January 25th, 2015)
• 67-1549 Bsa Alloy Cylinder Head Valves Super Rocket Gold Star Road (47.2% similar) Bsa A10 650 alloy cylinder head valves super rocket gold star road images to original rocket, or spitfire scrambler big valve aluminum with complete assemblies, in excellent condition. Will combine multiple items for lowest ship cost. Bsa A10 super rocket, rocket gold star or spitfire scrambler big ...(August 26th, 2018)