BETA RR Enduro cylinder head

You can also place the order by checking the units on the following table:

Image Reference Combination name Select quantity
STK-B-250-RR-R Model year: Until 2018, C.C: 250
STK-B-300-RR-R Model year: Until 2018, C.C: 300
STK-B-DOME300-R Model year: 2018 →, C.C: 300
STK-B-250-RR-R Model year: 2018 →, C.C: 250
XTR-BETARR-250-R Model year: 2018 →, Mod: + Control (Extreme Style), C.C: 250
XTR-BETARR-300-R Model year: 2018 →, Mod: + Control (Extreme Style), C.C: 300
PWR-BETARR-250-R Model year: 2018 →, Mod: + Power (MX Style), C.C: 250
PWR-BETARR-300-R Model year: 2018 →, Mod: + Power (MX Style), C.C: 300
PWR-B-250-RR-R Brand: Beta, Model year: ←2018, Mod: + Power (MX Style), C.C: 250
PWR-B-300-RR-R C.C: 300, Brand: Beta, Model year: ←2018, Mod: + Power (MX Style)
XTR-BETARR-250-R Piston Type: A (Dome), Brand: Beta, Mod: + Control (Extreme Style), C.C: 250
XTR-B-300-RR-R Brand: Beta, Model year: ←2018, Mod: + Control (Extreme Style), C.C: 300

More info

S3 STARS HEAD ENDURO CYLINDER HEAD KIT

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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