SP1 Glaze Breaker Stones - 280 Grit 3/PK

SP1 Glaze Breaker Stones are honing stones used to remove cylinder glaze during engine rebuilds on V-twin motorcycles. This three-pack provides multiple cutting surfaces for efficient glaze removal and faster bore prep before reboring.

Features

• 280 grit honing stones
• Three-pack quantity
• Quick cylinder glaze removal
• 6.4 in × 4 in × 0.8 in each stone

Specifications

• Brand: SP1
• Manufacturer Part #: SM-12154-3
• UPC: 191361193279
• Grit: 280
• Quantity: 3 per pack
• Dimensions: 6.4 in L × 4 in W × 0.8 in H
• Weight: 0.1 lbs
• Country of Origin: China (Taiwan)

Fitment

For V-twin motorcycles including Harley-Davidson and Indian Motorcycle models.

Frequently Asked Questions

What grit are these stones?

280 grit — coarse enough to break glaze quickly without over-cutting the bore.

How many stones are in the pack?

Three stones, providing ample cutting surface for a complete cylinder glaze removal job.

Do I need special equipment to use these?

These stones are used with a cylinder honing tool. Check your honing kit compatibility before ordering.

Can I use these on both cylinders?

Yes — the three-pack provides enough stone for both cylinders on most V-twin engines with material left over.