BIKEMAN PERFORMANCE MN-73Z1 Durability Engine Pistons Ey Kit MN/73Z1 155

( Brand: Bikeman Performance ), ( Manufacturer Part Number: MN/73Z1 ), ( Compatible Year: 2012 2011 2010 ), ( Compatible Model: 800 Rmk 155 ), ( Bundle Description: 1 Pc Genuine Bikeman Durability Kits ), ( Type: Durability Kits ), ( Core Charge: Free No Core Charge ), ( Fitment Type: Direct Replacement )

Review BIKEMAN PERFORMANCE Mn/73z1 Durability Kit Polaris 155 Engine Pistons Ey fits RMK 800 2010–2012

The **Bikeman Performance MN/73Z1 Durability Kit** is a meticulously engineered aftermarket upgrade designed specifically for the high-performance demands of the **2010-2012 Polaris 800 RMK** equipped with the **155cc engine**, ensuring enhanced reliability, extended longevity, and superior power output. This premium kit features a **high-quality forged aluminum piston set** crafted from **73Z1 alloy**, a material renowned for its exceptional strength, heat resistance, and durability critical attributes for the aggressive riding conditions and heavy-duty demands of off-road and trail applications. The pistons are precision-machined to exacting tolerances, ensuring a seamless fit within the cylinder bore while maintaining optimal compression ratios for peak performance. Complementing the pistons is a **comprehensive durability-focused package** that includes **reinforced piston rings** engineered to minimize wear and friction, **high-temperature piston pins** designed to withstand extreme heat without compromising structural integrity, and **premium piston cooling fins** that enhance heat dissipation for sustained power delivery. This kit is particularly beneficial for riders pushing their Polaris 800 RMK to its limits, whether navigating rough terrain, towing heavy loads, or engaging in prolonged off-road sessions where stock components may succumb to stress. By upgrading to the Bikeman Performance MN/73Z1 Durability Kit, owners can expect a noticeable improvement in engine efficiency, reduced risk of catastrophic failure, and a noticeable extension of the engine s service life making it an indispensable investment for those seeking both performance and peace of mind.

### **Pros and Cons of the Bikeman Performance MN/73Z1 Durability Kit for 2010 2012 Polaris 800 RMK (155 Engine Pistons)**

1. **Enhanced Durability** The kit is designed to improve the longevity of the engine by reinforcing critical components, particularly the pistons, which are prone to wear in high-performance or aggressive riding conditions. The upgraded materials and construction help resist heat, stress, and wear better than stock parts.

2. **Better Heat Dissipation** The pistons in this kit are often made from high-quality alloys that improve heat transfer, reducing the risk of overheating and thermal expansion issues. This can be particularly beneficial for riders who push the engine hard or operate in hot climates.

3. **Improved Power Output** While not a major power upgrade, the kit can contribute to smoother operation and reduced internal friction, which may lead to slight improvements in performance, especially in sustained high-RPM scenarios.

4. **Compatibility with Modifications** If you ve already installed other performance upgrades (e.g., headers, camshafts, or fuel system tweaks), this kit can help ensure that the engine components are better equipped to handle the increased stress.

5. **Warranty and Support** Bikeman Performance is a reputable brand with a good track record in the off-road and ATV community. Their kits often come with warranties and customer support, which can be reassuring for long-term reliability.

6. **Preventative Maintenance** Installing this kit can be seen as a proactive measure to avoid costly engine failures, especially if you ride frequently or aggressively. It s a way to extend the life of your engine before it reaches the point of needing a full rebuild.

---

1. **Cost** The kit is not cheap, especially when compared to stock or aftermarket alternatives that may offer similar benefits at a lower price. For a 2010 2012 Polaris 800 RMK, the cost may be justified only if you plan to keep the bike long-term or ride it hard, but it s still a significant investment.

2. **Installation Complexity** Replacing pistons and related components (e.g., rings, bearings, and possibly the crankshaft) requires disassembling the engine almost entirely. This is a labor-intensive job that may require professional help, adding to the overall cost. DIYers with limited experience may find the process challenging.

3. **Potential Overkill for Mild Use** If you primarily use your Polaris 800 RMK for light trail riding or occasional use, the benefits of this kit may not be worth the expense. Stock pistons and basic maintenance (e.g., oil changes, air filters) might suffice for low-stress operation.

4. **Limited Direct Performance Gains** Unlike a full engine rebuild or major modifications (e.g., turbocharging or forced induction), this kit does not drastically increase horsepower or torque. The improvements are more about durability and reliability than raw performance.

5. **Compatibility Concerns** While the kit is designed for the 2010 2012 Polaris 800 RMK with the 155 engine, there s always a risk of fitment issues if the bike has been heavily modified or if parts are not sourced correctly. Double-checking compatibility with the exact engine specs is crucial.

6. **Time Off the Bike** The installation process can take several days, depending on your experience and access to tools. This downtime may be inconvenient if you rely on the bike for work or recreation.

---

### **Conclusion and Recommendation**

The **Bikeman Performance MN/73Z1 Durability Kit** is a solid choice for riders who operate their 2010 2012 Polaris 800 RMK under demanding conditions such as frequent high-RPM use, aggressive riding, or extreme environments. The kit s focus on durability, heat resistance, and longevity makes it a worthwhile investment if you prioritize long-term engine health over short-term cost savings.

However, if your riding habits are mild or you re on a tight budget, the kit may not offer enough tangible benefits to justify the expense. In such cases, sticking with stock pistons and focusing on regular maintenance (e.g., oil changes, air filter upgrades, and proper cooling) could be a more cost-effective approach.

- **Install the kit if:** You ride your Polaris 800 RMK hard, plan to keep the bike for many years, or have already made other performance modifications that increase engine stress.

- **Skip the kit if:** You use the bike lightly, are on a budget, or prefer to invest in other upgrades (e.g., suspension, exhaust, or fuel system tweaks) instead.

- **Consider alternatives:** If the Bikeman kit is too expensive, explore other durability-focused piston kits from brands like **Crankshaft Kings, JE Pistons, or stock OEM replacements with upgraded rings** these may offer a balance between cost and performance.

For most aggressive or high-mileage riders, the Bikeman kit is a smart long-term investment. For casual riders, it s likely overkill. Always weigh the cost against your riding habits and priorities.

Details:

BikeMan Durability Kit for 2010 - 2012 Polaris 800 RMK 155 - Engine Pistons ey: Status: In Stock.

specifications exhaustsnowmobilee:

• for models: Rmk, 800
• for makes: Polaris
• for years: 2010-2012
• brand: Bikeman Performance
• mpn: Mn/73z1
• compatible year: 2012 2011 2010
• compatible model: 800 Rmk 155
• bundle description: 1 Pc Genuine Bikeman Durability Kits
• type: Durability Kits
• core charge: Free No Core Charge
• fitment type: Direct Replacement

general exhaustsnowmobilee:

• condition: New
• Parts Accessories > Snowmobile Parts > Exhaust

payments exhaustsnowmobilee:

• other
• wallet: Google-pay
• credit card: Diners-club

seller exhaustsnowmobilee:

• rating: 98.8%
• # reviews: 17824
• city: Multiple warehouses

offer exhaustsnowmobilee:

• started: February 23, 2026
• sold: 0
• availability: In Stock
• quantity: 1
• options: Ship-to-home

shipping exhaustsnowmobilee:

• type: Fixed
• service: Standard
• transit: 3-5 Days
• cost: $0.00
• class: Standard

returns exhaustsnowmobilee:

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

Bikeman Performance MN-73Z1 Is Similar To:

• 000000 Bikeman Performance Full Velocity Muffler (38.9% similar) This is a used muffler from a polaris 2013 600CC rush. I am sure it will fit other years. Sounds good, no dents or problems with the can...(December 12th, 2016)
• 01-105 Bikeman Performance Single Pipe Black (38.6% similar) Photos are for reference only. They are ceramic coated silver and polished. Color: black mountain single pipes are specifically designed for riding 5000 feet altitude. Actual product may differ from the item shown in photograph. On the continent of north America. These pipes use all of the stock ...(February 24th, 2019)
• 01-108 Bikeman Performance Single Pipe Black (38.6% similar) Fuel controller required, y-pipe parts or required to install, fits stock Bikeman Performance muffler arctic cat crossfire 1000 efi Son pro le 2009 M1000 153 162 free shipping the contiguous USA consisting of 48 adjoining us. On the continent of north America. Color: black mountain single pipes ...(February 24th, 2019)
• 01-111-c Bikeman Performance Cfr Fatt Azz Exhaust Pipe (38.7% similar) This is a Bikeman Performance ceramic coated fat AZ single exhaust pipe. Fits crossfire r 800 m8 model's. Retails new for 499. Adding 12 horsepower and an amazing 8 ft-lbs of torque. Bolt up this Performance tuned pipe and make your m CF 800 even more untouchable peak power is made from rpm with. ...(May 8th, 2018)
• 01-112-c Bikeman Performance Bmp Ho Fatt Azz Single Exhaust Pipe (40% similar) This is a Bikeman Performance ceramic coated fat AZ single exhaust pipe. Bolt up this Performance tuned pipe and make your F800 even more untouchable. Peak power is made from rpm with this pipe. For any questions on fitment other feel free to call us at. For any questions on this part or other used ...(May 8th, 2018)
• 01-113-c Bikeman Performance Procross 800 Articsingle (41.6% similar) Used couple scratches sold sled took off...(December 30th, 2016)
• 01-122-c Bikeman Performance Ceramic Fatt (39.4% similar) 7AM-8PM Mon Fri, 7AM-6PM sat sun...(August 29th, 2017)
• 01-212 Bikeman Performance Single Pipe Black (38.6% similar) 8 mid gain 5 peak. These pipes use all of the stock mounting locations and fit right into muffler or bump lightweight mufflers. Actual product may differ from the item shown in photograph. Y-pipe is not required but recommended. They are ceramic coated silver and polished. Photos are for reference ...(November 25th, 2018)
• 01-214-c Bikeman Performance Single Pipe Ceramic Chrome (35.8% similar) These pipes use all of the stock mounting locations and fit right into muffler or bump lightweight mufflers. On the continent of north America. Actual product may differ from the item shown in photograph. The increased back pressure provides your machine with much quicker throttle response for boon ...(April 6th, 2019)
• 01-326-c Bikeman Performance Bmp Ceramic (36.8% similar) Keep all packaging materials and the original shipping box. Free ground shipping applies to lower 48 contiguous states only. 2018 model's require fuel controller...(December 21st, 2017)
• 01-406 03-107 Bikeman Performance Exhaust Pipe Mod Manifold Arctic Cat (30.1% similar) Bikeman Performance stock pipe mod and manifold for arctic cat Zr XL I am willing to separate if anyone is interested in just one or the other. Note: this pipe mod won't make your sled any louder - it just makes breathe better for more power. Exhaust manifold y-pipe: this is Bikeman Performance ...(December 6th, 2018)