S3 Stars Cylinder Head Kit BETA Enduro RR 250 / 300 2T up to 2018 (flat top piston)

£175.99 £123.19 inc. VAT, where applicable


STAR HEAD cylinder heads: Forged in the best aluminum alloy to obtain a top quality and high durability components. Its new design has thicker walls and higher water flow to ensure a maximum cooling rate.

Delivered with 3 inlets:
• Compression: Standard, high comp. & high high comp.

New design:
• Capable of cooling faster, thus low revs power increases.
• Forging them eliminates the hot spots found on casted heads.

New look:
• Its shape and color makes it beautiful.
• Noticeable at a distance and stunning at a close view.

The kit includes:
• 1 Forged aluminum cylinder head cover.
• 3 Inserts: std, high comp. & high high comp.
• 5 O-rings: top cylinder & inserts
• 6 Copper washers for M8 cylinder head bolts.

Different inlet compressions, what varies?
• Standard (STD) compression: Higher torque and power at low revs. Even though it is similar to the original compression, you will notice the difference.
• High (A) compression: Possibility to add another gear, better traccion and very clean response.
• Very high ( AA y AAA) compression: Specially for 1500m high or more, or MX engine preparation.

*Models before to 2018 is delivered with the following compression:
A> Equivalent to Standard Compression
AA> Equivalent to High Compression
AAA> Equivalent to Extra High Compression




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