# SPEC Clutch SZ663 SPEC Stage 3 Clutch Kits | Summit Racing

**Manufacturer:** SPEC Clutch  
**MPN:** `SZ663`

## Specifications

| Attribute | Value |
| --- | --- |
| Brand name | SPEC Clutch |
| Manufacturer name | SPEC Clutch |
| Manufacturer | SPEC Clutch |
| DimensionUnit | mm |
| Extra Product Name | SPEC Clutch SZ663 SPEC Stage 3 Clutch Kits \| Summit Racing |
| UPC | 841802150926 |
| diameter | 171.0 |
| length | 171.0 |
| length_Attrib | Disc Diameter (mm) |
| moq | 1 |
| MPN | SZ663 |
| multiple | 1 |
| qtyInStock | -2 |
| qtySource | FieldMap |
| SKU | SXC-SZ663 |
| tierMinQty1 | 1 |
| tierPrice1 | 269.1000 |
| width | 171.0 |
| width_Attrib | Disc Diameter (mm) |
| Brand | SPEC Clutch |
| Manufacturer's Part Number | SZ663 |
| Part Type | Clutch Kits |
| Product Line | SPEC Stage 3 Clutch Kits |
| Summit Racing Part Number | SXC-SZ663 |
| Clutch Usage | Performance |
| Clutch Disc Quantity | 1 |
| Flywheel Included | No |
| Input Spline Quantity | 18 |
| Input Shaft Diameter | 0.750 in. |
| Disc Diameter (in ) | 6.750 in. |
| Disc Diameter (mm) | 171mm |
| Disc Material | Carbon composite |
| Disc Style | 4-paddle |
| Hub Style | Sprung |
| Pressure Plate Style | Diaphragm |
| Throwout Bearing Included | Yes |
| Alignment Tool Included | Yes |
| Pilot Bushing Included | Yes |
| Counterweight Assist | No |
| Mounting Hardware Included | No |
| Quantity | Sold as a kit. |

## Distributor availability

| Distributor | SKU | Price (USD) | Qty | Stock | MOQ |
| --- | --- | --- | --- | --- | --- |
| Summit Racing | SXC-SZ663 | 269.1 | 1 | None | 1 |

---
Structured data: `/python/html6/product/500/148000000/148201500/part_--SZ663---SPECClutch--2a2512c41c.json`  
Search API: https://www.dataalchemy.com/api/  
MCP server: https://www.dataalchemy.com/mcp