GASGAS/SHERCO 300 dome cylinder head only + 300A tablet for ST923 type cover
ST761300A
€68.50
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Description
Origin S3.
⚠ Compatible only with cover ref:BEST923R/BEST923U/BEST923B
Not compatible with the original cylinder head cover.
Dome s3 + compressed cylinder head with interchangeable dome, for better liveliness and power at high revs.
S3 STARS HEAD INSERT improves cooling, gives more TRACTION and sharper engine response and eliminates the typical hot spots of original cylinder heads.
Performance:
• Lowers the engine operating temperature.
• Eliminates hot spots on the original cylinder head.
What changes?
• Low compression (B): Phenomenal grip, ideal for soft terrain and to calm overly powerful engines. A delight!
• Standard compression (STD): More torque and more power at low revs, although the compression is similar to the original, you will notice the difference!
• High compression (A): Ride with more speed, more grip, precise engine response, and the bike remains very easy to control.
• Very high compression (AA and AAA): Especially for altitudes over 1000 meters.
⚠ Compatible only with cover ref:BEST923R/BEST923U/BEST923B
Not compatible with the original cylinder head cover.
Dome s3 + compressed cylinder head with interchangeable dome, for better liveliness and power at high revs.
S3 STARS HEAD INSERT improves cooling, gives more TRACTION and sharper engine response and eliminates the typical hot spots of original cylinder heads.
Performance:
• Lowers the engine operating temperature.
• Eliminates hot spots on the original cylinder head.
What changes?
• Low compression (B): Phenomenal grip, ideal for soft terrain and to calm overly powerful engines. A delight!
• Standard compression (STD): More torque and more power at low revs, although the compression is similar to the original, you will notice the difference!
• High compression (A): Ride with more speed, more grip, precise engine response, and the bike remains very easy to control.
• Very high compression (AA and AAA): Especially for altitudes over 1000 meters.
Compatibility
Below is the list of motorcycles compatible with this part.
Specifications
| Technical sheet | |
|---|---|
| Reference | ST761300A |
| Part Type | Aftermarket Part |

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