New to Powersport Superstore? Try our Year-Make-Model search and find the right parts for your ride by clicking "My Garage" on the upper-right! ➡

Starting Line Products 12-850 Power Dome Billet Head Set - 0-6000ft.

SKU: 7157324

Starting Line Products 12-850 Power Dome Billet Head Set - 0-6000ft.

Starting Line Products
$509.15
$509.15 $535.95
Sale Sold out
/
Shipping calculated at checkout.
In stock and ready for shipping
This is a pre order item. We will ship it when it comes in stock.
Latest in SLP cylinder head technology. More horsepower with less detonation. Improved combustion efficiency. Improved throttle response in midrange.

Vehicle Fitment:

2022 Polaris 650 PRO-RMK Matryx 155
2022 Polaris 650 RMK KHAOS Matryx Slash 146
2020-2022 Polaris 850 INDY Adventure 137
2019-2022 Polaris 850 INDY XC 129
2020-2022 Polaris 850 INDY XC 137
2020-2022 Polaris 850 INDY XCR
2019-2021 Polaris 850 PRO-RMK 155
2019-2021 Polaris 850 PRO-RMK 155 3in.
2019-2021 Polaris 850 PRO-RMK 163
2019-2021 Polaris 850 PRO-RMK 163 3in.
2019-2020 Polaris 850 PRO-RMK 174
2022 Polaris 850 PRO-RMK AXYS 155 2.75in.
2022 Polaris 850 PRO-RMK AXYS 155 3in.
2022 Polaris 850 PRO-RMK AXYS 163 3in.
2022 Polaris 850 PRO-RMK AXYS 165 2.75in.
2022 Polaris 850 PRO-RMK Matryx 155
2022 Polaris 850 PRO-RMK Matryx Slash 155 2.75in.
2022 Polaris 850 PRO-RMK Matryx Slash 155 3in.
2022 Polaris 850 PRO-RMK Matryx Slash 163 3in.
2022 Polaris 850 PRO-RMK Matryx Slash 165 2.75in.
2020-2021 Polaris 850 RMK KHAOS 155
2020-2021 Polaris 850 RMK KHAOS 155 3in.
2022 Polaris 850 RMK KHAOS AXYS 155 2.75in.
2022 Polaris 850 RMK KHAOS AXYS 155 3in.
2022 Polaris 850 RMK KHAOS AXYS 163 3in.
2022 Polaris 850 RMK KHAOS AXYS 165 2.75in.
2022 Polaris 850 RMK KHAOS Matryx 155
2022 Polaris 850 RMK KHAOS Matryx Slash 146
2022 Polaris 850 RMK KHAOS Matryx Slash 155
2022 Polaris 850 RMK KHAOS Matryx Slash 163 3in.
2022 Polaris 850 RMK KHAOS Matryx Slash 165 2.75in.
2019-2020 Polaris 850 Rush PRO-S
2019 Polaris 850 Rush XCR
2019-2021 Polaris 850 SKS 146
2019-2021 Polaris 850 SKS 155
2019-2021 Polaris 850 SwitchBack Assault 144
2019-2021 Polaris 850 SwitchBack PRO-S
2019-2021 Polaris 850 SwitchBack XCR
2022 Polaris Patriot Boost PRO-RMK Matryx Slash 163 3in.
2022 Polaris Patriot Boost PRO-RMK Matryx Slash 165 2.75in.
2022 Polaris Patriot Boost RMK KHAOS Matryx Slash 155
Secure, Trusted, and Encrypted

Protected by industry-leading 256-bit SSL encryption and backed by Shopify’s PCI DSS–compliant infrastructure. Every page, click, and transaction is encrypted and monitored for threats — so you can shop with confidence knowing your data stays protected.

Parts for Every Machine

We stock aftermarket parts, gear and accessories for motorcycles, ATVs, UTVs, snowmobiles, personal watercraft, and even performance cars — all backed by expert support and live inventory.

Real-Time Fitment Accuracy

Search by Year, Make, and Model with confidence. Our proprietary vehicle fitment system ensures you’re only shown what fits — no guesswork, no returns — just parts that fit.

Fast, Trackable Shipping

We ship from over 20 U.S. warehouses — often same or next business day. Every order includes tracking and transparent fulfillment updates from start to finish, all processed through a secure, encrypted checkout.

Quick Links

Ride With Us. Stay Connected.

Follow us for real-time fitment updates, gear drops, and pro tips from the garage. No spam, just parts, tech, and news for riders like you.

Your Garage

Add a Vehicle