da Vinci Components
da Vinci Designs Direct Drive American Made Billet Machined Cranks (150mm to 200mm + 3 hole cranks) *** New Option – Cerakoted Black *** 
Click on the photo for a larger size
430 grams– Reduce rotating mass without any sacrifices
Impressively Stiff – All your energy goes into every pedal stroke
Replaceable / Interchangeable Spider – When the industry changes, or you change your chainring pattern, you don’t have to replace your cranks
Square Taper Interface – This old standard is hard to beat, reliable, allows you to use different width bottom brackets to adjust chainline and you have many brands of serviceable bottom brackets to choose from.
Low Profile Bottom Bracket Spindle – Increases stiffness and reduces weight by using a shorter spindle
No Creaking – Design eliminates the creaking associated with three piece cranks Low 158mm Outside to Outside Q-Factor – Easier on your body 103mm spindle for road bikes 107mm spindle for mountain bikes 103 to 107mm spindle for tandem captain cranks (you can go wider if you like) 107 to 113mm spindle for tandem stoker cranks
NEW Lengths Available – 150mm – 155mm -160mm – 162.5mm – 165mm – 167.5mm – 170mm – 172.5mm – 175mm – 180mm – 200mm – (130/150/170mm) or (120/140/160mm) Triple Hole Child/Full-size-person Cranks
Spiders Available
– Four Arm 104mm – 64mm
– Standard (or compact) 110mm – 74mm
– Special 110mm – 58mm for those that want to run a chainring smaller than 24 tooth
– Road 130mm (with 74mm triple option)
– 34 tooth Spider/Chainring. This is a replaceable one piece spider/34 tooth chainring. It is lighter, less expensive (no need to buy chainrings and chainring bolts) and perfectly concentric.
Retail Prices Single Bike or Tandem Front – $259 Any length*/Spider combination w/o triple hardware For triple chainrings you will need inner chainrings bolts and spacers. *200mm Single Bike or Tandem Front $289 – your choice of spider
Tandem Rear – $299 Any length*/Spider combinations. NEW lower price
– Add $25 pair for Black Cerakote
There are simply too many combinations to make the cranks available online with confidence we have them in stock.
To order cranks, please call or email us.
Includes our three hole cranks from above (130/150/170mm or 120/140/160mm), sliding bottom bracket, spindle, your choice of spider, chain, and hardware. (This is all you need for a da Vinci tandem. A conventional tandem will require a second chainring, long chainrings bolts and spacers between the two left rear chainrings
Click on the thumbnail for full size photo
(pictured with old cranks, you would get the cranks above)
Tandem with child stoker kit
Bottom Bracket
$48 ChroMo Spindle – 215g
$129 Titanium Spindle – 160g
High quality JIS square taper bottom brackets with sealed bearings, and aluminum cups. Some sizes have an aluminum sleeve instead of the carbon fiber as shown.
Available in 103mm, 107mm, 110mm, 113mm, 118mm – For 68mm shell
Stress Analysis Designed Brake Stiffener – Use Your Energy to Stop – Not to Flex Your Frame
Improves your braking
Reduced “mushy” feeling at your brake levers
Reduce brake squeal
- We spent several tedious months on the design of these brake boosters. Trial and error with sophisticated stress analysis software — shaving a few grams here, adding a few grams there, until we came up with the ultimate design of stiffness and light weight.
- Brake stud spacing range 70 to 92mm (2-3/4″ to 3-5/8″)
- Big Stiffy (62 grams) for tires over 1.4″. The stiffest big tire brake booster we have experienced. It’s not the lightest, but are you looking for a piece of jewelry for your bike or something to improve your braking?
- Small Stiffy (47 grams) for tires up to 1.4″. The Stiffest & Lightest brake booster around. If you are running skinny tires, there is no other choice.
Retail Price $32 *** We are out of the stand-off hardware, but still have the braces in the photo above. If you would like to use your own hardware, we are selling the braces for 50% ***
Easy-Split In-line cable Separators (aka Splitters, disconnects)
Quick – Simple – Light – Reliable – Easy Installation
Easy-Splits also work for quick handlebar conversions.
If you have compatible road and mountain shifters and derailleurs, as well as compatible brakes. You could easily switch between road and mountain bars for different types of riding.
Easy-Split Replacement Hardware
It is a good idea to replace your set screws when you replace the cables, or with the 2nd time you replace the cables. Only use a good sharp 2mm Allen wrench (Hex key) to reduce your chances of rounding out the set screw.
Pro Built Tandem Wheels
* Rims are now all black Velocity Dyad
- 26″ rims 36 spokes or 700c rims w/ 40 spokes.
- Sapim Spokes. 13/15/14g (2.3/1.8/2.0mm) for disc brake wheels
- White Industries Hubs
- Professionally hand built with Spoke Prep to reduce spoke loosening and pre-stressed (spokes are over-tensioned by hand to pre-stretch them). Also to reduce maintenance.
- Available with black hubs and spokes
26″ Front Wheel $270
26″ Disc Front Wheel $300
26″ Rear Wheel Disc $510 (now with titanium Cassette Body)
* Add $25 per wheel for black hubs and spokes
700c Front Wheel $279
700c Disc Front Wheel $309
700c Rear Wheel Disc $519 (now with titanium Cassette Body)
* Add $25 per wheel for black hubs and spokes
And for the gram counters – 840 grams Front – 1060 grams Rear – Not bad for full blown tandem wheels, ready for years of trouble free service.
Add 58 grams per wheel for 700c
Control Tech Adjustable Stoker Stem $95
Seatpost clamping diameter 29.8mm or 31.6mm
27.2mm and 28.6mm shims for 29.8mm post are available.
Handlebar Diameter:
26mm (also works with 25.4mm) or 31.8mm (O.S.)
Length:
Long Boom (uncut range 200mm to 255mm)
Minimum stem length (after cutting) 155mm to 210mm
X-Long Boom (uncut 235mm to 320mm)
Click on the thumbnail for full size photo
Shim to Fit Stoker Stem to Different Diameter Seatposts
Shim to Fit Different Diameter Handlebars
Spare or Replacement Boom $45 – Extra Long $55
Custom Length and Angle Stoker Stem – Titanium or Chromoly/Stainless – Add Height, Not Weight
Stem in photo is Titanium, 210mm, and 45º rise.
Height Comparison
Save weight and increase height
Up to 45º degree rise (ControlTech is 35º)
The handlebar clamp is offset to increase height and reduce captains saddle interference.
Fits 31.6mm Seatpost and 31.8mm OS handlebars.
Shims for 27.2mm or 29.8mm seatposts above.
Shims for 25.4/26mm or 7/8″/22.2mm handlebars available above.
Custom titanium $490 – Chromoly $400
Fixed Length Titanium Stoker Stem
Shims to fit different diameter seatposts or handlebars above.
1/2 the weight of an adjustable stoker stem. 188g for 160mm – $220 (Add $15 for Black)
Click to download full size pdf drawing for sizing. Please print full size.
Available in 160mm, 180mm, 200mm, 220mm Lengths
Fits 31.6mm Seatpost and 31.8mm OS handlebars.
Shims for 27.2mm or 29.8mm seatposts above.
Shims for 25.4/26mm or 7/8″/22.2mm handlebars available above.
Maintenance Items
E-Bike strength chains long enough for the right rear final drive. These chains hold up better than most.
9 Speed chain. KMC X9.93 in custom lengths w/Quick Link
If you have a custom Extra long rear top tube, order a “Drive Chain 124 Links” for the front timing chain and cut to fit.
If you have a 9 speed cassette, chainstays longer than 17″(43cm) or a rear cassette with a cog bigger than 36 tooth, please contact us for a drive chain longer than 124 links.
Replacement 34 tooth Spider/Chainring or other spiders- These replacement spiders, or spider/chainring only fits da Vinci cranks.
da Vinci Drive Chainrings
Replacement chainrings for the right side of the Intermediate Shaft
Replacement Intermediate Shaft Bearings (Need 2 or 3 per bike) 6903 2RS sealed cartridge bearings.
Custom S&S Coupler / Pedal Wrench – Standard or Long Length – Lightweight Titanium Option
Fits S&S Couplers from 1-3/8 to 2″ diameter frame tubes.
With pedal wrench, and 8mm box/hex for extra leverage for your pedal hex key.
Standard size also has 4mm, 5mm, 6mm, 1/4″, 8mm, 10mm, 11mm, 12mm, 13mm, 14mm, & 15mm box hex wrenches. This also saves weight.
Standard length is almost 2″ longer than the standard S&S wrench, for more leverage.
Standard length can be used with a 4mm Allen wrench to adjust your eccentrics.
Standard length also available in Titanium. Half the weight.
Long Wrench for shop use, or if you struggle getting the couples tight enough with the standard length.
Finish Line Extreme Fluoro 20g Syringe – This is the Grease to use on your S&S Couplers
Out of stock
Double Freewheel Block (DFB) Tool $25
Lockring Wrench $35
This wrench fits the intermediate shaft body lockring (the third bottom bracket that has the bearings in it) and the lockring that holds the chainrings on the spline drive, on tandems with three, two, or one chainrings.
Soon to be added: Freewheels
You can change the quantities in your shopping cart.