TSP Billet Cylinder Head for Beta 300 RR / RR Race / X-PRO (2022-on)

The TSP billet cylinder head for Beta 300 RR, RR Race and X-PRO 2-stroke models from 2022-on is a complete CNC-machined upgrade designed to deliver stronger torque, smoother power and improved reliability compared with the stock is available in low, medium and high compression configurations to match different riding styles and conditions.

Key Features

CNC-machined from solid 6061-T6 billet aluminium for strength, precision and durability.
Dedicated combustion chamber design for the Beta 300 engine, optimised for power, efficiency and detonation resistance.
Available in low, medium and high compression options to tailor engine character to terrain and rider preference.
Removable compression insert design allows future tuning flexibility using separately available inserts.
Significantly stronger, cleaner bottom and mid-range performance with a smoother, more tractable delivery than the stock head.
Improved fuel economy and greatly reduced risk of detonation under load.
Includes new head O-rings and washers, plus recommended jetting guidelines for easy setup.
Compatible with both single- and dual-spark-plug 2022-on Beta 300 heads (with a simple coil and plug conversion on dual-plug models).
Works very well in combination with the OXA system.

Compression Options and Riding Characteristics

Compression Option	Riding Style / Conditions	Power Character	Fuel Recommendation
Low Compression	Extreme enduro, very technical terrain, riders prioritising traction and smoothness over outright power.	Strong, controllable bottom-end torque with a very smooth delivery that does not break traction keep engine temperatures lower in slow, demanding sections.	Optimised for reliability and resistance to overheating; suitable for typical high-quality pump fuel.
Medium Compression	General trail riding, hard enduro and racing where a broad, versatile powerband is required.	Noticeably stronger bottom and mid-range with a useful gain on top compared with tractable and easy to control across varied terrain.	Recommended for 95 or 98 RON fuel (approximately 89 or 91 AKI in the USA).
High Compression	Aggressive riders seeking maximum hit and responsiveness, or riding at higher elevations around 1000 m or higher.	Harder-hitting power everywhere, especially off the bottom, transforming the engine into a much more aggressive ideal for slow, tight extreme enduro near sea level due to increased heat build-up.	Best used with 98 RON fuel at sea level (approximately 91 AKI in the USA).

Technical Details

Application: Beta 300 RR, 300 RR Race, 300 X-PRO 2-stroke (model years as per fitment table below).
Material: 6061-T6 billet aluminium, fully CNC-machined.
Design: Complete cylinder head with optimised combustion chamber and removable compression insert.
Base gasket compatibility: Designed to work with the standard 0.50 mm base gasket and stock cylinder height.
Spark plug: Uses the standard 14 mm Beta 300 RR spark plug size (for example BR8EG or equivalent).
Dual-spark models: On dual-spark 2022-on heads, one ignition coil is disconnected and the system is converted to the single-plug layout using the central 14 mm plug.
Sealing hardware: Supplied with new head O-rings and washers to ensure a reliable seal.
Engine benefits: Increased power throughout the rev range, smoother throttle response, better fuel efficiency and extended top-end component life compared with stock in many cases.

Typical Use Cases

Extreme enduro riders favour the low compression insert for maximum traction, cooler running and minimal stalling on difficult rock gardens, hillclimbs and tight singletrack.
Trail and enduro riders commonly select the medium compression option for a broad, versatile powerband that works well in varied conditions from technical woods to faster special tests.
Racers and high-elevation riders often choose the high compression configuration to sharpen throttle response and recover power lost at altitude, provided riding conditions and fuel quality are appropriate.

System Compatibility

Designed as a direct bolt-on to the standard Beta 300 cylinder without modification.
Works very effectively in combination with the OXA system, complementing increased torque and smooth response.
Engineered, machined and developed by TSP with extensive dyno and real-world testing.

Vehicle Fitment

Brand	Model	Year
Beta	300 RR	2022-on
Beta	300 RR Race	2022-on
Beta	300 X-PRO	2025-on

Specification

Product Code:	1046788
Manufacturer ID:	P.H.BE300.22on.BUNDLE-2
#Type	Medium compression
#Type	Low compression
#Type	High compression
Condition	New
Stock status	In stock