GSC K20C1 17+ Civic Type R Exhaust Valve Guides (3121)
The GSC Power-Division exhaust valve guides for the 2017+ Honda Civic Type R. Standard sized guides are sold as set of 8 or individually. Oversized +0.001" and +0.003" options are sold individually. Please double-check your purchase and quantities.
Vehicle Fitment:
2017+ Civic Type R
K20C1 CTR
Specs:
Total Length: 1.970" / 50.04mm
Outer Diameter: 0.4357" / 11.07mm
Valve Stem Diameter: 5.5mm
More Info:
GSC Power-Division valve guides are made from a proprietary blend of Manganese Bronze and turned on dedicated precision CNC turning centers. With performance and aftermarket installation in mind, we hold extremely tight tolerances on through-hole concentricity to outside diameter which minimizes the required honing time for the installer. True-to-size outside diameters minimize honing of guide bosses on cylinder heads that don't require boss service. Our guides are easier to install and shaped to improve air flow instead of just copying OEM design.
Vehicle Fitment:
2017+ Civic Type R
K20C1 CTR
Specs:
Total Length: 1.970" / 50.04mm
Outer Diameter: 0.4357" / 11.07mm
Valve Stem Diameter: 5.5mm
More Info:
GSC Power-Division valve guides are made from a proprietary blend of Manganese Bronze and turned on dedicated precision CNC turning centers. With performance and aftermarket installation in mind, we hold extremely tight tolerances on through-hole concentricity to outside diameter which minimizes the required honing time for the installer. True-to-size outside diameters minimize honing of guide bosses on cylinder heads that don't require boss service. Our guides are easier to install and shaped to improve air flow instead of just copying OEM design.
| Part Number: | Size: | Quantity: |
| GSC3121-8 | Standard | Set of 8 |
| GSC3121 | Standard | 1 Guide |
| GSC3121.001-1 | +.001" | 1 Guide |
| GSC3121.003-1 | +.003" | 1 Guide |
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