BC0901 – Polaris XP 1000 (14-up) Stage 2 All Purpose Camshafts (pair)

For the Polaris RZR XP 1000 pilot demanding more from every terrain, incremental bolt-ons reach a point of diminishing returns. True performance evolution requires addressing the heart of the combustion cycle: valve timing. The BC0901 Stage 2 All Purpose Camshafts are not an accessory; they are a fundamental recalibration of your ProStar 1000 engine’s personality. Engineered for the rider who refuses to choose between tractable low-end torque and explosive top-end power, this precision-ground cam pair redefines the term “all-purpose.” By optimizing lobe profile, lift, and duration, BC Racing transforms the broad power curve from a compromise into a conquest, delivering linear, responsive power that enhances rock crawling, dune climbing, and trail blasting with equal authority. This is the definitive internal upgrade for the discerning enthusiast seeking holistic performance without sacrificing drivability.

Engineering the Broad-Power Advantage: The BC0901 Cam Profile Breakdown

Unlike aggressive race cams that sacrifice low-end manners for peak horsepower, the BC0901 profile is the result of exhaustive dyno and real-world testing. The “Stage 2 All Purpose” nomenclature signifies a calculated balance. The camshafts feature a moderately increased lift and duration over stock, which allows for a significantly greater volume of air/fuel mixture to enter the combustion chamber. The genius lies in the lobe’s ramp design and the selected lobe separation angle (LSA). A wider LSA promotes superior cylinder filling at lower RPMs, building cylinder pressure early for strong throttle response off-idle. The specific ramp rates are engineered to provide smooth, controlled valve acceleration, reducing stress on the valvetrain components while ensuring the valves open quickly enough to maximize the intake and exhaust cycles. This profile works in concert with the ProStar 1000’s dual-overhead-cam design, precisely coordinating the intake and exhaust events to minimize overlap where necessary, preventing charge contamination at low speeds, and optimizing scavenging at high RPMs. The result is a fattened torque curve that begins building just off idle and pulls strongly through the midrange, carrying that urgency well into the upper rev band without a precipitous drop-off. For a deeper dive into the principles of camshaft timing and lobe design, consider reading this authoritative technical article on camshaft fundamentals from MotorTrend.

Key Performance Benefits of the BC0901 Camshaft Upgrade

Installing the BC0901 camshafts initiates a comprehensive transformation of your XP 1000’s engine characteristics. The benefits are immediately perceptible and quantifiable:

• Substantial Low-End and Mid-Range Torque Gains: Experience a profound increase in tractable pulling power from 2,500 RPM upwards. This translates to effortless hill climbs, reduced need for downshifting in technical terrain, and stronger acceleration out of corners.
• Extended and Linear Power Band: Eliminate the “peaky” feel of stock and race cams. Power delivery is smooth, predictable, and linear, providing confidence-inspiring control across the entire RPM range, from crawling to wide-open throttle.
• Enhanced Throttle Response and Drivability: The engine feels more alert and eager. Throttle inputs are met with instant, mechanical response, improving vehicle control and the overall connected driving experience.
• Improved Volumetric Efficiency: By optimizing the engine’s ability to breathe, the cams make more effective use of every combustion cycle. This often leads to marginal gains in fuel efficiency under normal cruising conditions, as the engine operates more efficiently to achieve the same workload.
• Maintained Reliability with OEM+ Quality: BC Racing camshafts are manufactured from premium-grade steel alloy, heat-treated for exceptional durability and wear resistance. They are designed as a direct, drop-in replacement that works harmoniously with the stock valvetrain, ensuring long-term reliability when installed with proper valve lash adjustment.

Precision Vehicle Fitment and Compatibility

The BC0901 camshaft set is engineered as a direct OE replacement for specific Polaris ProStar 1000 engines. Correct fitment is critical for performance and valvetrain longevity. This camshaft package is designed for:

Primary Application: 2014-2020 Polaris RZR XP 1000 and RZR XP 1000 EPS models (All trim levels, including Turbo variants post-2017).

Engine Compatibility: This camshaft set is designed specifically for the Polaris ProStar 1000cc, 4-stroke, dual-overhead cam (DOHC) engine. It is a direct replacement for the stock intake and exhaust camshafts. Critical Installation Note: While the cams are a direct fit, installation must include a professional valve lash adjustment using feeler gauges to the factory specified clearance. Camshaft installation should be performed by or under the guidance of a qualified technician familiar with Polaris ProStar engine internals. Always verify engine model year and code before purchase.

Technical Specifications: BC0901 Camshafts

The Verdict: Ultimate Versatility Unleashed

The BC0901 Stage 2 All Purpose Camshafts represent the pinnacle of balanced performance engineering for the Polaris XP 1000 platform. This upgrade transcends simple power addition; it recalibrates the engine’s fundamental character towards greater capability and responsiveness in every riding scenario. By masterfully blending increased lift and duration with a lobe profile that prioritizes a wide, usable power band, BC Racing has created a camshaft set that makes the ProStar 1000 engine more powerful, more tractable, and more enjoyable to operate—without pushing the valvetrain to the ragged edge of reliability. For the rider who uses their RZR as a true multi-terrain tool, from technical trails to open desert, this is the single most impactful internal engine modification for achieving seamless, authoritative power on demand. It is the definitive choice for those who measure performance not just by peak numbers, but by the quality and breadth of power delivered to all four wheels.