Cat Cams Turbo Conversion 258/248 9.25mm/8.50mm Camshafts for Mazda MX-5 NB 1.6

£754.80 inc. VAT

Available to order — usually ships in under 3 weeks

Cat Cams Turbo Conversion 258?/248? 9.25mm/8.50mm Camshafts for Mazda MX-5 NB 1.6. These Camshafts are for use in Mazda MX-5 NB 1.6 engines with 30mm solid cam followers (27mm shims on top).

Machining of the cylinder head will be required to fit this camshaft. Uprated cam wheels and valve springs are required to fit this camshaft.
FOR TURBO APPLICATIONS ONLY. Following details must be verified
  • The camshafts must turn smoothly in the cylinder head, provide free travel by machining where needed

Camshaft Data Intake Exhaust
Lash ramp 0.30mm 0.35mm
Duration @ 0.1mm 258? 248?
Duration @ 1.0mm 224? 206?
Valve lift 9.25mm 8.50mm
Lobe angle 110? 110?
Timing @ 1.0mm 2? / 42? ?43? / -17?
Valve lift @ TDC 1.50mm 0.50mm


Parts Required
Cam Wheels Y
Followers N
Valve Lash N
Valve Springs Y

Additional information

Shipping Weight 6 kg
Shipping Dimensions 57 × 28 × 10 cm

Cat Cams



Cam Followers

Standard Shim Over Bucket




Mk2 (98-05)

Warranty information

Warranties cover defects in materials and workmanship only. Warranty is for replacement of a similar product, repair of the original product or refund of the purchase value only and excludes all labour and incurred charges including towing, fitting, inconvenience, and purchases of other manufacturer's products. The warranty is good for the period stated in the additional info tab from the date of purchase. Mileage warranties are for road use only and proof of mileage is required. Products must be installed by an independent experienced professional mechanic and the suspected defect must be present at the outset. The warranty does not cover damage caused by incorrect installation, failure to comply with the maintenance requirements of the vehicle, processing or otherwise changing the product, ordinary wear and tear, or any other external influences. Warranties are invalid if the product is used for racing, rallying, drifting, track days or any other form of motorsport or competition. Please refer to the manufacturer's own warranty documentation for more information.

Making a warranty claim

Proof of purchase receipt showing the date of purchase, proof of mileage at installation, proof of current mileage and invoice of the work undertaken by an independent experienced professional mechanic must be supplied along with the returned products for a warranty claim to be considered. If your vehicle needs to be used whilst your warranty claim is considered replacement parts from the same manufacturer should be purchased through BOFI Racing. In the event of a successful warranty claim, we will refund the card that was originally used to purchase the replacement parts, in full or in part depending on the nature of the claim. BOFI Racing reserves the right to make full or partial compensation at its sole discretion depending on the condition and mileage use of the returned suspect parts. For example, if you have used the part for several thousand miles before a defect is noticed, only partial compensation may be offered.

Make Model Year
Mazda MX-5 II (NB) 1998 - 2005