Key Specs

MFG. Part #121223
BrandSpeedway Motors
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Speedway Motors 121223 Details

305 Racesaver valve spring shim kit.

  • 48 Piece Shim Kit
  • 16 - 0.015"
  • 16 - 0.030"
  • 16 - 0.060"
  • 1.25" dia
  • Sold as a kit

CARB Warning

For race/ off road use only

Emissions warning: this part only legal for sale or use in California for racing (competition) vehicles which may never be used, registered, or licensed for use upon a public highway. Any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.

Speedway Motors 121223 Specifications

KEY SPECS
MFG. Part #121223
BrandSpeedway Motors
GENERAL
Sold in QuantityKit

Ratings & Reviews

5

3 Reviews

Overall Assessment

Customers praise the product for its precision fit and variety of sizes. They confirm the item as being exactly as described, focusing on its practicality, especially in fitting Racesaver springs. Its quality is also highlighted, with recommendations showing preference for our product over competitors. The product excels in material quality and usability.

5

3 reviews

5

3

4

0

3

0

2

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Great source for proper fit and dependable function

5.0

8 months ago

Kane

Citra, FL

Verified

A must have for proper cylinder head/ valve spring set up. These fit stock gm spring pockets perfectly.

Would Recommend

Nice assortment of sizes

5.0

2 years ago

Hollywood

South Dakota

Verified

Exactly as described, good product

Would Recommend

Needed for shiming valve springs.

5.0

7 years ago

TJ66

Upstate NY

Verified

Perfect fit for the Racesaver springs.

Would Recommend

Showing 3 of 3 reviews

Questions & Answers

1 Question • 1 Answer

what is the ID of this shim?

by Gary

• 7 years ago

1 answer

1 of 1 questions shown

Customer Impersonation Script