Nippon Racing JDM CTR Pistons for Honda B-Series
Nippon Racing JDM CTR (Civic Type R) pistons feature a high-dome profile and a factory-style press-pin configuration for OEM Honda/Acura B-Series connecting rods. They offer a high-compression option for B16A builds and a replacement piston option for B16B rebuilds.
Available Bore Sizes
- 81.25mm (+0.25mm oversize)
- 81.50mm (+0.50mm oversize)
- 81.75mm (+0.75mm oversize)
- 82.00mm (+1.00mm oversize)
Confirm the required bore size with your machine shop before ordering.
Important Fitment Notes
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Wrist-pin style: Press pin only.
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Rod compatibility: Designed for OEM factory Honda/Acura B-Series connecting rods.
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Aftermarket rods: Not compatible with H-beam or I-beam connecting rods that require floating wrist pins.
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Compression data: ITR-specific compression ratios do not apply to this CTR piston dome profile.
Estimated Compression Ratios
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B16B block with B16B VTEC head: 10.85:1
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B16A block with B16A VTEC head: 10.95:1
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B18A/B (LS) block with LS non-VTEC head: 11.40:1
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B18C1 (GSR) block with GSR VTEC head: 12.40:1
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B18C1 (GSR) block with B18C5 (ITR) or B16A VTEC head: 12.10:1
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B18A/B (LS/VTEC) block with GSR VTEC head: 12.64:1
Compression ratios are estimates. Verify your machine shop measurements, required bore size, and cylinder head/block combination before purchasing.
Optional Rod Bolt Set
Sold separately: ARP 208-6401 Connecting Rod Bolts – Honda B-Series VTEC (OEM Rods). Review the bolt set's fitment details to confirm compatibility with your connecting rods.
