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Component Repair & Restoration

BMW Motorcycle Component Repair image

Piece By Piece Bob’s BMW Gets It Done!

Bob’s Master Technicians proudly do top-notch benchwork service all-year round including rebuilding, repairing, reassembling, reconditioning, resurfacing, relining, restoring, and more! Whether it’s just a piece or a specific part that needs service, Bob’s BMW can help. Call 301-497-8949 ext. 502 TODAY!

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Ultrasonic Cleaning

Ultrasonic cleaning imageBob’s BMW offers commercial grade Ultrasonic cleaning for your motorcycle parts. Ultrasonic cleaning is powerful enough to remove tough contaminants, yet gentle enough not to damage the substrate. It provides excellent penetration and cleaning in the smallest crevices and between tightly spaced parts in a cleaning tank. And the best part is the parts and equipment do not need to be disassembled. Ultrasonic cleaning is a excellent way to clean little parts without touching them with a brush and harsh chemicals.

Contact us for more information.


Our most frequently requested services. We do much more so if you don’t see it listed, CONTACT US TODAY!

This service includes:
head reconditioning for air heads image

  • Complete cleaning and bead blasting
  • New valuves, guides, springs, and if needed…
  • Unleaded exhaust valve seats (55-’87 models) precision ground with up to 5 angles.
  • Labor with exhaust seat $525/pair*
  • Labor without valve seats $485/pair*
  • Parts costs for ’75-’87 models $375
  • Parts Costs for’88 & on models $325

We use state-of-the-art equipment and the best parts available, including Black Diamond valves and Ampco 45 valve guides. Your heads are returned to you actually BETTER than when they were NEW!


Exhaust Port Thread Repair
$165 each
Spark Plug Hole Repair
• ’70 & on – Helicoil
• ’55-’69 Re-weld & Re-thread

$150 each


Center Stud Hole Repair for twin valve cover (Helicoil)
$50 each
Dual Plug Conversion, Air-Head motor:
Machining of heads to accept bottom plugs get more power! For ’80 & later Air-Heads, maximize the benefits of a dual plug conversion by adding BMW High-Compression (9.5:1) pistons. $331. Call for price.
$175 pair
Parts needed vary with year and other specifics. Please CALL for details.
Rocker Arm Resurfacing and Reconditioning (’74 & on)
$200 set of 4
Connecting Rod Reconditioning
$165 pair
Cylinder Boring (Torque Plate utilized for absolute accuracy)
$150 each
Need PISTONS? Call!
Bosch Starter Motor Rebuild (includes Bendix)
Carb Clean & Rebuild
• Bing CV type
• Dellorto
• Bing slide type off the bike

$378 pair
$216 pair

$160 to $265
$100 to $160
Final Drive Spline Restoration:
(’70-’84 only) send compl. final drive….or if you just send ring gear only.
Final Drive Rebuild – New seals,
gaskets, bearings. inspect, reseal.
Transmission Rebuild: 5 speed

Transmission Rebuild: 4 speed



$360 to $420

$275 ’70-’73
$375 ’55-’69

Rebuild Spoke Wheel:
• Lace w/Stainless spokes and true wheel
• Bead blast hub/Replace wheel bearings & seals



Reline Fuel Tank:
• Air-Heads: Stops rust! No more flaky sludge in gas!
• Stripping inside of tank if necessary

*Prices are based on a standard job and subject to change. Request a quote. Costs may vary depending on individual cases. A nominal charge for shop supplies will be added to most jobs. Similar services for 1955-’69 models are typically higher. Other services not listed here are also available.