ICON IC9986C.STD FHR LS Piston Set, 3.780 Bore, 6.125 Rod
ICON IC9986C.STD FHR LS Piston Set, 3.780 Bore, 6.125 Rod
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In-stock orders are processed within 48 hours; transit time is additional.
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Need help with a return? Request authorization within 30 days of delivery for eligible unused, uninstalled items. See details for exclusions and applicable fees.
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Request return authorization (RMA) within 30 days of delivery for eligible items. Keep items unused and uninstalled, with original packaging and accessories. Electronics, liquids, special orders and other categories are excluded.
Email sales@frsport.com with RETURN and your order number in the subject to request an RMA. Please wait for return authorization before sending your item back.
Wrong part/size or change of mind: a 20% return processing fee applies, plus applicable shipping costs.
Original shipping is non-refundable. For orders shipped free, the actual outbound shipping cost is deducted from the refund. Return shipping is prepaid by the customer.
After payment capture, cancellations and refunds generally incur a 5% processing fee, except for our error, confirmed defects or confirmed carrier loss. The 5% and 20% fees do not stack; only the greater applicable fee applies. Store credit waives the 5% fee, but applicable return fees remain.
Missing, incorrect or transit-damaged items: report within 3 business days of receipt with photos of the product and packaging.
For defective items, contact us for help with the manufacturer's warranty process. The manufacturer decides the claim.
ICON IC9986C.STD is an FHR forged piston set for a GM Gen III/IV LS engine build using a 3.780-inch standard bore, 3.622-inch stroke and 6.125-inch connecting rods. The set contains eight pistons; piston rings are separate.
- Compression height: 1.304 inches.
- Wrist-pin diameter: .927 inch.
- Flat crown with two valve reliefs.
- Ring grooves: 1.5 mm, 1.5 mm and 3.0 mm.
Confirm the actual block bore, crankshaft stroke, rod length, pin size and required clearances with your engine builder. The IC9986C piston set and IC9986CKTS piston-and-ring package are different catalog packages.
