NN40-DM35 SUNNEN Diamond Honing Stone Set

Review SUNNEN Aftermarket 100mm Diamond Honing Stone Set

Introducing the SUNnen NN40-DM35 Diamond Honing Stone Set, a high-performance toolkit designed for precision engine cylinder honing. This set includes two 100mm (4 inches) diameter honing stones, each with a unique grit size and diamonds arranged in a specific pattern to deliver optimal honing results.

The first stone, marked as the "roughing stone," features a 40-grit diamond matrix. This stone is specifically designed for heavy stock removal and roughing out the cylinder bore. Its large, closely-spaced diamonds efficiently remove metal, restoring the cylinder to the desired size and shape.

The second stone, labeled as the "finishing stone," is a 35-grit diamond honing stone. It follows the roughing process, focusing on the fine tuning and smoothing of the cylinder bore. With smaller, densely-packed diamonds, this stone prepares the surface for an optimal engine performance by creating a perfectly mirror-like finish.

This diamond honing stone set is made from a high-quality, durable material that ensures long-lasting use. The stones are also engineered to maintain their shape, providing consistent honing results throughout their lifespan.

Additionally, the stones come with a convenient storage case, making it easy to transport and store the set between uses. This set is an essential tool for engine builders, machinists, and automotive enthusiasts seeking to achieve the highest level of engine performance.

The SUNnen NN40-DM35 Diamond Honing Stone Set is the go-to choice for those who demand precision, durability, and efficiency in their honing process. With its unique combination of roughing and finishing stones, this set is capable of transforming engine cylinders into perfectly honed, high-performance components.

The Sunnen NN40-DM35 100mm Diamond Honing Set is a popular choice for engine builders and machinists due to its ability to provide precise and efficient engine surface finishing. Here are some pros and cons of buying this diamond honing set:

1. High-Performance Diamond Grits: The diamond grits in this honing set offer superior cutting and finishing capabilities, making it ideal for engine surfaces that require precise and accurate honing.

2. Consistent Honing Pattern: The Sunnen honing system provides a consistent honing pattern, ensuring uniform engine surface finish, which is crucial for optimal engine performance.

3. Versatile: The set includes a range of diamond grits, allowing users to hone engine surfaces to their desired finish, from rough to fine.

4. Durable: The diamond grits are known for their durability and long life, making this set a cost-effective solution for engine builders and machinists.

1. Expensive: The Sunnen NN40-DM35 100mm Diamond Honing Set can be quite expensive compared to other honing sets on the market, which may be a deterrent for some users.

2. Requires Skill: Honing engines with a diamond hone set requires a certain level of skill and experience, which may be a challenge for some users.

3. Messy: Diamond honing can generate a significant amount of debris and metal shavings, which can make the honing process messy and time-consuming.

The Sunnen NN40-DM35 100mm Diamond Honing Set is a high-performance and versatile tool for engine builders and machinists who require precise and efficient engine surface finishing. While it may be more expensive than other honing sets and requires a certain level of skill, the consistent honing pattern, superior cutting capabilities, and durability of the diamond grits make it a worthwhile investment for those who prioritize engine performance and accuracy.

If you are an engine builder or machinist seeking to achieve precise and accurate engine surface finishing, the Sunnen NN40-DM35 100mm Diamond Honing Set is a recommended option, despite its higher cost and skill requirements. It offers superior cutting and finishing capabilities, consistency, and durability, making it a valuable tool for optimizing engine performance. However, if you are new to engine honing or have limited budget, it may be worth exploring other honing options before investing in this set.

Details:

Range: 4.0 - 5.6 or 102mm to 142mm. Part number: NN40-DM35. Aftermarket Sunnen NN40-DM35 100mm diamond honing stone set, manufacturer. Diamond length : 100mm.

specifications lightument:

• brand: Sunnen
• mpn: Nn40-dm35
• country of origin: China

payments lightument:

• credit card: diners-club
• other
• wallet: paypal

shipping lightument:

• carrier: usps
• service: usps priority mail
• class: expedited
• transit: 3-9 days
• type: calculated

returns lightument:

• method: money back
• policy: returns accepted
• paid by: buyer
• time: 30 days

offer lightument:

• started: december 2, 2025
• options: ship-to-home
• sold #: 14
• best offers: true
• in stock #: 5
• availability: in stock
• prices: $125.00–$225.00
• item condition: New

seller lightument:

• city: council grove, kansas
• rating: 100.0%
• # reviews: 4287

general lightument:

• category: Business & Industrial > Light Equipment Tools