Feuling, Reaper Race Series 521 cam kit
Note: Special Order Product only. To order please contact your MCS sales representative. Chain drive. This Feuling M8 camshaft kit includes chain drive camshaft; Race Series lifters and a cam installation kit that includes cam bearing; cam/crank hardware and a gasket/O-ring kit that allows for install of the factory one-piece pushrods. Feuling recommends the optional 993528 Feuling one-piece heavy duty HP+ pushrod kit; with 0.165" wall thickness. Feuling rocker box fastener kit 707450 is also highly recommend to help prevent cylinder head cracking; this kit replaces the rocker shaft bolts with studs and nuts to help reduce the stress on the rocker shaft standoffs.521 CAM - Aggressive pulling power with a "nasty" sound; the REAPER 521 grind will shine in 114" and larger cubic inch engines with added compression ratio. Ported cylinder heads are not required but will complement the cam and add even more pulling power throughout the range. The stock throttle body produces an excellent powerband and use of a high flow throttle body will increase peak power numbers. A high flow exhaust system and air cleaner is highly recommended for optimal performance. FEULING recommends matching this cam with their RACE SERIES oiling system.NOTE: High Lift valve springs are required on stock cylinder heads; see FEULING BEEHIVE valve spring kit 993530. SE cylinder heads have high lift valve springs and will accept the 521 grind cam. Heavy Duty one piece pushrods are also highly recommende
The estimated dispatch time is displayed on each product page and depends on the product’s stock location:
- In stock: dispatch within 1–3 business days
- European stock: dispatch within 2–3 business days
- USA stock: estimated dispatch within 3–5 weeks
- Products with a specific lead time: estimated dispatch according to the timeframe displayed on the product page
Once your order has been dispatched, you will receive a confirmation email with tracking information.
Estimated carrier transit times are:
- France: 1–5 business days
- Most European destinations: 5–10 business days
- Countries outside the European Union: delivery times may vary depending on the destination and customs clearance
The dispatch estimate and carrier transit time are separate.
Compatibility
You can verify compatibility in two ways:
- Use the vehicle selector on the product page to check whether the part matches your motorcycle.
- Review the fitment table for the full list of compatible models and years.
Some parts may require additional components, modifications or a specific existing setup. Always read the fitment notes and product description before ordering.
Still unsure? Contact us with:
- motorcycle make and model;
- model year;
- exact version or trim;
- current modifications;
- product reference or link.
Our team will help you confirm compatibility before ordering.
Eligible items may be returned within 30 days of delivery.
To be accepted, the item must be:
- unused and uninstalled;
- in its original condition;
- returned with its original packaging, labels and accessories.
Parts that have been installed, damaged or modified cannot be returned.
Please contact us before sending an item back. Returns sent without prior authorization may not be accepted.
Return shipping costs remain the customer’s responsibility unless the item received is incorrect, damaged or defective.
Customs Duties & Taxes
European Union
Orders delivered within the European Union are shipped from France. No import duties are charged upon delivery.
Countries outside the European Union
Local VAT, customs duties and carrier clearance fees may apply. These charges are determined by the destination country and remain the customer’s responsibility.
Payment Options
We accept major credit and debit cards, PayPal and the installment payment methods displayed at checkout.
Eligible orders may be paid in 3 or 4 installments, subject to the payment provider’s approval and applicable limits.
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